• This diamond-impregnated core-style bit features superior long life and is ideal for drilling in both flat and contoured surfaces
• Diamond grit a full 360-degrees around the circumference of the bit allows it to be used in a rasping action to enlarge a hole if needed
• Holes on the side of the bit allow the removal of glass dust from inside the bit
• Each bit is packaged with Dremel cutting oil to increase the speed of cut and prevent damage to the bit from overheating

For use on

• Glass, ceramic wall tile, glass blocks, glass bottles, jewelry