CNC Core Drill Bits For Dekton and GlassAlpha® introduces a Wet Core Drill Bit for CNC Machines and Radial Arm workstations for cutting Dekton®, Crystallized Glass and other vitreous materials. This Core Bit comes with a 1/2" Gas Thread, designed for the tool holder. The diamonds and matrix have been selected to minimize blow-out at the bottom of the stone, since most CNC Router fabrication is done upside-down. This new Core Bit utilizes the superior technology that has made the Alpha® Wet and Dry Core Bits the best in the industry. Wet Core Drill Bit Designed for CNC Machines and Radial Arm Workstations Designed for Dekton®, Crystallized Glass and Other Vitreous Materials Comes with A 1/2" Gas Thread for Tool Holders Diamonds and Matrix Minimize Blow-Out Utilizes The Superior Technology Part No. Diameter Maximum RPM Recommended For Threads DND01250 1-1/4" 4,000 Dekton®, Crystallized Glass 1/2" Gas Thread DND01375 1-3/8" 4,000 Dekton®, Crystallized Glass 1/2" Gas Thread