Kratos Non Core Bits for CNC Stone and Granite Fabrication

Kratos Non Core Bits are professional diamond core drill bits designed for drilling clean, accurate holes in granite, marble, quartzite, and other natural stone materials without leaving a core plug. The non-core (or blind-hole) design makes these bits well-suited for applications such as drilling faucet holes, soap dispenser holes, and other through-holes in stone countertops where a clean exit cut is required. Available in 6 variants to cover a broad range of hole diameters commonly required in countertop fabrication, Kratos Non Core Bits provide reliable performance in both wet drilling and standard shop applications.

Diamond core bits are the standard tooling solution for drilling through hard stone materials. The Kratos Non Core Bits use a sintered diamond segment construction that progressively removes material as the bit rotates and advances through the stone. The non-core design eliminates the center plug, allowing the bit to complete the hole without the need to extract a stone core, which simplifies the drilling process and reduces the risk of cracking the stone during core removal. This is particularly important when drilling holes in thin stone countertops or near edges where stress concentrations can cause damage.

With 6 size variants available, Kratos Non Core Bits cover the most common hole diameters required for faucet installations, standard plumbing fixtures, and accessory mounts. Wet drilling is recommended to cool the bit, extend tool life, and manage stone dust during the drilling operation. For professional fabricators and installers who require consistent, clean hole results across a range of stone types and thicknesses, Kratos Non Core Bits are a practical, high-quality tooling solution.

Features

• Non-core design for clean through-holes without core extraction
• Available in 6 diameter variants for common countertop hole sizes
• Sintered diamond segment construction for consistent material removal
• Suitable for granite, marble, quartzite, and natural stone
• Ideal for faucet holes, soap dispensers, and plumbing fixture openings
• Wet drilling recommended for cooling and extended tool life
• Manufactured by Kratos, a trusted stone tooling brand

Specifications