{"title":"Countersink Core Bits","description":"\u003cp\u003eCountersink diamond core bits for creating recessed holes in granite, marble, quartz, and other stone surfaces. Countersink bits combine a pilot hole with a wider recess in a single operation, saving time when installing undermount sinks, flush-mount fixtures, and recessed hardware in stone countertops.\u003c\/p\u003e\u003cp\u003eThese bits are engineered for the specific demands of stone countertop fabrication, where precise hole depth and diameter matter for proper fixture installation. Use them on a drill press or core drill motor for consistent, repeatable results.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCombines pilot drilling and countersinking in one step\u003c\/li\u003e\n\u003cli\u003eDesigned for undermount sink clips and recessed hardware\u003c\/li\u003e\n\u003cli\u003eWorks on granite, marble, quartz, and engineered stone\u003c\/li\u003e\n\u003cli\u003eUse with drill press or core drill for accurate depth control\u003c\/li\u003e\n\u003cli\u003eSaves fabrication time by eliminating multiple drilling steps\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSpeed up your countertop fabrication with countersink core bits that produce clean recessed holes in a single pass.\u003c\/p\u003e","products":[{"product_id":"apexx-brazed-diamond-countersink-core-bits-1","title":"APEXX Brazed Diamond Countersink Core Bits","description":"\u003ch2 style=\"color:#231F20; font-size:28px; margin-bottom:18px;\"\u003eAPEXX Vacuum Brazed Countersink Core Bit 5\/8\"-11\u003c\/h2\u003e\u003cp style=\"color:#231F20; font-size:15px; line-height:1.7;\"\u003eAPEXX Brazed Diamond Countersink Core Bits Crafted with advanced vacuum brazing technology, Apexx Brazed Diamond Countersink Core Bits deliver exceptional durability and cutting performance. Designed for versatility, these bits handle a wide range of materials — from natural stone and ultra-compact surfaces (UCS) to tough porcelain. Ideal for fabricators and installers seeking clean, accurate countersinks with minimal chipping, Apexx core bits combine long-lasting performance with professional-grade results. Always wear appropriate PPE. Follow local safety regulations when using power tools or\u003c\/p\u003e\n\u003ch4 style=\"color:#F15C22; font-size:18px; margin-top:30px;\"\u003eFeatures\u003c\/h4\u003e\n\n\u003cul style=\"color:#231F20; font-size:14px; line-height:1.8;\"\u003e\n  \u003cli\u003eBuilt with advanced vacuum brazing technology\u003c\/li\u003e\n  \u003cli\u003eTapered diamond rim for countersink hole preparation\u003c\/li\u003e\n  \u003cli\u003e5\/8\"-11 female thread\u003c\/li\u003e\n  \u003cli\u003eMaterial: Porcelain Tile, UltraCompact Surfaces, Marble, Engineered Stones, Granite, Natural Quartzite\u003c\/li\u003e\n  \u003cli\u003eDry or Wet use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\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;\n  padding: 14px 20px; cursor: pointer; font-size: 17px; font-weight: 700;\n  color: #231F20; background: #fff; }\n.dst-accordion-label:hover { background: #FFF3EB; }\n.dst-accordion-label::after { content: '+'; font-size: 22px; font-weight: 700; color: #F15C22; }\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; 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\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-22229-07001-features\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-22229-07001-features\" class=\"dst-accordion-label\"\u003eFeatures\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003cul style=\"color:#231F20; font-size:14px; line-height:1.8;\"\u003e\n\u003cli\u003eSecure the bit using the correct adapter for your drill.\u003c\/li\u003e\n\u003cli\u003eMark the position and start at low RPM to establish the hole.\u003c\/li\u003e\n\u003cli\u003eApply steady, even pressure — do not force the bit.\u003c\/li\u003e\n\u003cli\u003eUse water for wet drilling to cool the bit and extend life.\u003c\/li\u003e\n\u003cli\u003eAlways wear appropriate PPE.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003ch4\u003eManufacturer Features \u0026amp; Specifications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt with advanced vacuum brazing technology\u003c\/li\u003e\n\u003cli\u003eTapered diamond rim for countersink hole preparation\u003c\/li\u003e\n\u003cli\u003e5\/8\"-11 female thread\u003c\/li\u003e\n\u003cli\u003eMaterial: Porcelain Tile, UltraCompact Surfaces, Marble, Engineered Stones, Granite, Natural Quartzite\u003c\/li\u003e\n\u003cli\u003eDry or Wet use.\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Ocean Diamond","offers":[{"title":"1-1\/2\"","offer_id":42451636617286,"sku":"22229-07001","price":75.03,"currency_code":"USD","in_stock":true},{"title":"1-3\/4\"","offer_id":42451636650054,"sku":"22229-07002","price":85.65,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":42451636682822,"sku":"22229-07003","price":100.3,"currency_code":"USD","in_stock":true},{"title":"3-1\/2\"","offer_id":42451636715590,"sku":"22229-07004","price":217.35,"currency_code":"USD","in_stock":true},{"title":"1-3\/8\"","offer_id":42451636748358,"sku":"22229-07005","price":71.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0621\/0800\/8518\/files\/222_VBCountersinkCoreBit_600_f606ecc2-7cbc-428c-b493-0ec38bbd7897.jpg?v=1756407831"}],"url":"https:\/\/dynamicstonetools.com\/collections\/countersink-core-bits.oembed","provider":"Dynamic Stone Tools","version":"1.0","type":"link"}