{"product_id":"alpha-vextra-disc-4-1-2-50-7-8","title":"Alpha Vextra Disc 4-1\/2\" #50 7\/8\"","description":"\u003ch2 style=\"color:#231F20; font-size:28px; margin-bottom:18px;\"\u003eAlpha® Vextra™ Flat Diamond Grinding Disc 4-1\/2\", #50, 7\/8\" Arbor (VDD4550)\u003c\/h2\u003e\u003cp style=\"color:#231F20; font-size:15px; line-height:1.7;\"\u003eThe Alpha® Vextra™ flat diamond grinding disc is engineered for grinding steel, stainless steel and non-ferrous metals where spark mitigation matters — including explosive (Ex) zones. Its sandwich construction with rubber damping makes the disc light, reduces vibration and noise, and minimizes operator fatigue. An optimized diamond grit and layer arrangement deliver long life and consistent performance — users typically report 50–60× the life of conventional abrasives. This listing is VDD4550: 4-1\/2\" diameter, #50 grit, 7\/8\" arbor for high-speed angle grinders.\u003c\/p\u003e\u003ch4 style=\"color:#F15C22; font-size:18px; margin-top:30px;\"\u003eFeatures\u003c\/h4\u003e\u003cul style=\"color:#231F20; font-size:14px; line-height:1.8;\"\u003e\n\u003cli\u003eDesigned to grind steel, stainless steel and non-ferrous metals with spark mitigation\u003c\/li\u003e\n\u003cli\u003eRemoves rust, burrs, mill scale and paint on metal surfaces without clogging\u003c\/li\u003e\n\u003cli\u003eEliminates epoxy, glues and adhesives cleanly\u003c\/li\u003e\n\u003cli\u003eAlso runs on natural stone, engineered stone\/quartz, wood and rubber\u003c\/li\u003e\n\u003cli\u003eSandwich construction with rubber damping reduces noise and vibration\u003c\/li\u003e\n\u003cli\u003eOptimized diamond grit and layer arrangement for consistent, aggressive cut\u003c\/li\u003e\n\u003cli\u003eUp to 50\u0026amp;ndash;60\u0026amp;times; the life of conventional abrasive discs\u003c\/li\u003e\n\u003cli\u003eAvailable 4-1\/2\", 5\", and 7\" with 7\/8\" arbor or 5\/8\"-11 zinc hub\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003e\n.dst-accordion { margin-top: 25px; border: 1px solid #FDDCC5; border-radius: 6px; overflow: hidden; }\n.dst-accordion-item { border-bottom: 1px solid #FDDCC5; }\n.dst-accordion-item:last-child { border-bottom: none; }\n.dst-accordion-toggle { display: none; }\n.dst-accordion-label { display: flex; justify-content: space-between; align-items: center; padding: 14px 20px; cursor: pointer; font-size: 17px; font-weight: 700; color: #231F20; background: #fff; transition: background 0.2s; }\n.dst-accordion-label:hover { background: #FFF3EB; }\n.dst-accordion-label::after { content: '+'; font-size: 22px; font-weight: 700; color: #F15C22; transition: transform 0.3s; }\n.dst-accordion-toggle:checked + .dst-accordion-label { background: #FFF3EB; }\n.dst-accordion-toggle:checked + .dst-accordion-label::after { content: '\\2212'; }\n.dst-accordion-content { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; padding: 0 20px; background: #fff; }\n.dst-accordion-toggle:checked ~ .dst-accordion-content { max-height: 5000px; padding: 15px 20px 20px; }\n\u003c\/style\u003e\u003cdiv class=\"dst-accordion\"\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-alpha-vextra-disc-models\" class=\"dst-accordion-toggle\" checked\u003e\u003clabel for=\"acc-alpha-vextra-disc-models\" class=\"dst-accordion-label\"\u003eModels \/ Part Numbers\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003ctable style=\"width:100%; border-collapse:collapse; color:#231F20; font-size:14px;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#FFF8F3;\"\u003e\n\u003cth style=\"padding:8px 12px; text-align:left; border-bottom:2px solid #F15C22;\"\u003ePart No.\u003c\/th\u003e\n\u003cth style=\"padding:8px 12px; text-align:left; border-bottom:2px solid #F15C22;\"\u003eDiameter\u003c\/th\u003e\n\u003cth style=\"padding:8px 12px; text-align:left; border-bottom:2px solid #F15C22;\"\u003eGrit\u003c\/th\u003e\n\u003cth style=\"padding:8px 12px; text-align:left; border-bottom:2px solid #F15C22;\"\u003eArbor\u003c\/th\u003e\n\u003cth style=\"padding:8px 12px; text-align:left; border-bottom:2px solid #F15C22;\"\u003eMax RPM\u003c\/th\u003e\n\u003cth style=\"padding:8px 12px; text-align:left; border-bottom:2px solid #F15C22;\"\u003eUPC\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD4550\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e4-1\/2\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e50\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\/8\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e13,200 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670565\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD4535\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e4-1\/2\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e35\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\/8\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e13,200 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670541\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD453H\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e4-1\/2\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e35\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\/8\"-11\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e13,200 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670558\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD455H\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e4-1\/2\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e50\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\/8\"-11\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e13,200 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670572\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD4580\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e4-1\/2\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e80\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\/8\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e13,200 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670664\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD458H\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e4-1\/2\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e80\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\/8\"-11\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e13,200 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670671\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD5035\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e35\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\/8\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e12,200 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670220\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD503H\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e35\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\/8\"-11\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e12,200 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670237\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD5050\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e50\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\/8\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e12,200 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670244\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD505H\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e50\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\/8\"-11\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e12,200 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670251\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD5080\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e80\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\/8\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e12,200 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670589\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD508H\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e80\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\/8\"-11\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e12,200 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670596\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD7035\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e35\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\/8\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e8,400 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670602\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD703H\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e35\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\/8\"-11\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e8,400 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670619\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD7050\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e50\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\/8\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e8,400 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670626\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD705H\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e50\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\/8\"-11\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e8,400 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670633\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD7080\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e80\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\/8\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e8,400 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670640\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eVDD708H\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e80\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e5\/8\"-11\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e8,400 RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173670657\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-alpha-vextra-disc-howto\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-alpha-vextra-disc-howto\" class=\"dst-accordion-label\"\u003eHow to Use\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003col style=\"color:#231F20; font-size:14px; line-height:1.8;\"\u003e\n\u003cli\u003eConfirm the disc diameter and arbor match your grinder \u0026amp;mdash; this VDD4550 is 4-1\/2\" with a 7\/8\" arbor.\u003c\/li\u003e\n\u003cli\u003eMount on a high-speed angle grinder, sander or polisher using the tool's original flange and lock nut (7\/8\" arbor models) or thread directly onto the spindle (5\/8\"-11 zinc-hub models).\u003c\/li\u003e\n\u003cli\u003eVerify grinder no-load RPM does not exceed the disc Max RPM (13,200 RPM for 4-1\/2\", 12,200 RPM for 5\", 8,400 RPM for 7\").\u003c\/li\u003e\n\u003cli\u003eStart with #35 grit for aggressive stock removal, #50 for general purpose, #80 for finer finish work.\u003c\/li\u003e\n\u003cli\u003eRun dry, or feed water at the disc face to keep dust down \u0026amp;mdash; the Vextra works wet.\u003c\/li\u003e\n\u003cli\u003eFor virtually dust-free grinding, pair with an Ecoguard G retrofit and a HEPA vacuum. Note: some metal powders are combustible \u0026amp;mdash; confirm material safety before vacuum collection.\u003c\/li\u003e\n\u003cli\u003eInspect the disc before each use; replace if cracked, glazed or worn below useful diamond depth.\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-alpha-vextra-disc-variant-specs\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-alpha-vextra-disc-variant-specs\" class=\"dst-accordion-label\"\u003eSpecifications by Variant\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003cdiv style=\"margin-top:18px; padding:14px 16px; border:1px solid #FDDCC5; border-radius:6px; background:#FFF8F3;\"\u003e\n\u003ch5 style=\"margin:0 0 10px 0; color:#F15C22; font-size:16px;\"\u003eVextra Flat Diamond Grinding Disc 4-1\/2\", 50 grit — VDD4550\u003c\/h5\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; color:#231F20; font-size:14px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003ePart No.\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eVDD4550\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003eUPC\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e749173670565\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eVextra Flat Diamond Grinding Disc 4-1\/2\", 50 grit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003eMax RPM\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e13,200 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003ePackaged Weight\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e0.50 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003eCommodity Code\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e6804.21.0000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eKorea\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-alpha-vextra-disc-common-specs\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-alpha-vextra-disc-common-specs\" class=\"dst-accordion-label\"\u003eCommon Specifications\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%; border-color:#FDDCC5; font-size:14px;\"\u003e\n\u003ctr style=\"background-color:#F15C22; color:#fff;\"\u003e\n\u003cth style=\"padding:8px 12px; text-align:left;\"\u003eProperty\u003c\/th\u003e\n\u003cth style=\"padding:8px 12px; text-align:left;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; width:40%;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eFlat diamond grinding disc, sandwich construction with rubber damping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; width:40%;\"\u003ePrimary Materials\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eSteel, stainless steel, non-ferrous metals; also stone, quartz, wood, rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; width:40%;\"\u003eGrits Available\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003e#35 (coarse), #50 (medium), #80 (fine)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; width:40%;\"\u003eDiameters Available\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003e4-1\/2\", 5\", 7\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; width:40%;\"\u003eArbors Available\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003e7\/8\" or 5\/8\"-11 zinc hub\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; width:40%;\"\u003eUse\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eHigh-speed angle grinder, sander, or polisher; dry or wet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; width:40%;\"\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eKorea\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-alpha-vextra-disc-related\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-alpha-vextra-disc-related\" class=\"dst-accordion-label\"\u003eRelated \u0026amp; Companion Products\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003cul style=\"color:#231F20; font-size:14px; line-height:1.8;\"\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.dynamicstonetools.com\/products\/alpha-vexcel-diamond-grinding-disc\" target=\"_blank\" style=\"color:#F15C22;\"\u003eAlpha\u0026amp;reg; Vexcel Diamond Grinding Disc\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.dynamicstonetools.com\/products\/alpha-ecoguard-g-dust-shroud\" target=\"_blank\" style=\"color:#F15C22;\"\u003eAlpha\u0026amp;reg; Ecoguard G Dust Shroud\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.dynamicstonetools.com\/products\/alpha-bmp-variable-speed-wet-polisher\" target=\"_blank\" style=\"color:#F15C22;\"\u003eAlpha\u0026amp;reg; BMP-700 Brushless Variable-Speed Polisher\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-alpha-vextra-disc-faqs\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-alpha-vextra-disc-faqs\" class=\"dst-accordion-label\"\u003eFAQs\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\n\u003cdetails style=\"margin-bottom:8px; padding:10px 14px; background:#FFF8F3; border-left:3px solid #F15C22; border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer; font-weight:600; color:#231F20; font-size:14px;\"\u003eHow long does the Vextra disc last compared to conventional abrasives?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0 0; color:#231F20; font-size:14px;\"\u003eLife depends on application and material, but users typically see 50\u0026amp;ndash;60\u0026amp;times; the life of conventional abrasive discs.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px; padding:10px 14px; background:#FFF8F3; border-left:3px solid #F15C22; border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer; font-weight:600; color:#231F20; font-size:14px;\"\u003eCan I use the Vextra disc with water to keep dust down?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0 0; color:#231F20; font-size:14px;\"\u003eYes \u0026amp;mdash; the Vextra Flat Diamond Grinding Disc is designed to run wet as well as dry. Feed water at the disc face to suppress dust.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px; padding:10px 14px; background:#FFF8F3; border-left:3px solid #F15C22; border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer; font-weight:600; color:#231F20; font-size:14px;\"\u003eHow do I eliminate dust during grinding?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0 0; color:#231F20; font-size:14px;\"\u003eAlpha offers the Ecoguard G retrofit dust shroud for most 4-1\/2\" and 5\" industrial grinders. Combined with a HEPA vacuum, the Vextra runs virtually dust-free. Note: some metal powders are combustible \u0026amp;mdash; verify material safety before vacuum collection.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px; padding:10px 14px; background:#FFF8F3; border-left:3px solid #F15C22; border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer; font-weight:600; color:#231F20; font-size:14px;\"\u003eWhat tools can I use with the Vextra disc?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0 0; color:#231F20; font-size:14px;\"\u003eHigh-speed angle grinders, sanders and polishers. Use the tool's original flange and lock nut on 7\/8\"-arbor models, or thread the 5\/8\"-11 zinc-hub models directly onto the spindle.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px; padding:10px 14px; background:#FFF8F3; border-left:3px solid #F15C22; border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer; font-weight:600; color:#231F20; font-size:14px;\"\u003eDoes Alpha offer a square arbor for the Ecogrinder?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0 0; color:#231F20; font-size:14px;\"\u003eA square arbor suitable for the Ecogrinder is available upon request.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px; padding:10px 14px; background:#FFF8F3; border-left:3px solid #F15C22; border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer; font-weight:600; color:#231F20; font-size:14px;\"\u003eWhich grit should I choose?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0 0; color:#231F20; font-size:14px;\"\u003e#35 for aggressive stock removal (rust, mill scale, weld dressing). #50 for general-purpose grinding (this listing). #80 for finer finish work.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-alpha-vextra-disc-videos\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-alpha-vextra-disc-videos\" class=\"dst-accordion-label\"\u003eVideos\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003cdiv style=\"display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:14px;\"\u003e\u003cdiv\u003e\n\u003cp style=\"margin:0 0 6px 0; color:#231F20; font-weight:600; font-size:14px;\"\u003eVextra Flat Grinding Discs\u003c\/p\u003e\n\u003ciframe width=\"100%\" height=\"220\" src=\"https:\/\/www.youtube.com\/embed\/J05C4lX-HoU\" frameborder=\"0\" allowfullscreen style=\"max-width:100%; border-radius:6px;\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-alpha-vextra-disc-docs\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-alpha-vextra-disc-docs\" class=\"dst-accordion-label\"\u003eDocumentation\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003cul style=\"list-style:none; padding-left:0;\"\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.alpha-tools.com\/Files\/Docs\/Flyers\/PDFs\/Vextra_flyer.pdf\" target=\"_blank\" style=\"color:#F15C22;\"\u003e📄 Vextra Grinding Disc Flyer\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.alpha-tools.com\/Files\/Docs\/SDS\/PDFs\/512_Diamond-Metal-Bonded-Blades-Wheels_sds.pdf\" target=\"_blank\" style=\"color:#F15C22;\"\u003e📄 SDS \u0026amp;mdash; Diamond Metal-Bonded Blades, Grinding Wheels \u0026amp; Core Bits\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cp style=\"margin-top:24px; padding:14px 18px; background:#FFF8F3; border-left:4px solid #F15C22; color:#231F20; font-size:14px;\"\u003e\u003cstrong\u003e⚠ WARNING:\u003c\/strong\u003e Cancer and Reproductive Harm — \u003ca href=\"https:\/\/www.P65Warnings.ca.gov\" target=\"_blank\" style=\"color:#F15C22;\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e. Always wear appropriate PPE.\u003c\/p\u003e","brand":"Alpha Professional Tools","offers":[{"title":"Default Title","offer_id":44806559498310,"sku":"VDD4550","price":52.7,"currency_code":"USD","in_stock":false}],"url":"https:\/\/dynamicstonetools.com\/products\/alpha-vextra-disc-4-1-2-50-7-8","provider":"Dynamic Stone Tools","version":"1.0","type":"link"}