Use our CRL Suction Base Drilling Rings for drilling glass whenever you use coolant or carbide grain. Made of a special rubber compound that won’t break the glass if accidentally dropped on it. Easy-to-use, just wet the base with coolant or glass cleaner and press onto the glass. Four sizes of round rings, plus an oval shaped ring for drilling dual outlets. Diameters are measured inside the ring.

Always wear the proper safety gear including gloves and eye protection when drilling glass. Work should be performed on a flat, horizontal surface. A Ground Fault Circuit Interrupter must be used when using any type of electric tool in conjunction with water or coolant. Failure to follow any of these precautions can result in operator injury.

Most shipping weights are approximate and have not been verified. If the exact weight is needed in order to determine shipping costs, and shipping costs are required in order for you to complete your order, please request this prior to submitting your order by contacting CRL Customer Service. Product images shown are of the actual product or a close representation. ColorsColours can vary depending on your computer's video card and on how your monitor's colorcolour is adjusted.