CRL 4-1/2" AG Series Plated Diamond Drill Diamond Countersinks Router & Grinding Bits This means no sudden movements

This means no sudden movements or impacts to accidentally break your glass

sinks and shower stalls

It is safe for use on a wide range of materials including plastics

yet so accurate and easy-to-use

The brass-plated

CRL 4-1/2" AG Series Plated Diamond Drill Diamond Countersinks Router & Grinding Bits This means no sudden movementsUnique Aggressive Sawtooth Profile Our Most Durable Style Drill Diameters from 1 8" to 4 1 2" The special sawtooth design of CRL Amazing Glazing Plated Diamond Drills reduces the contact area, allowing better grinding action and increased coolant penetration. They are perfect for use in portable tripod and cup style machines. Our most durable drill has been machined from solid steel. Use with DTC80 Diamond Tool Coolant and submerge in a retaining ring