- Ideal for drilling holes in flat and contoured glass
- Diamond-impregnated cutting bit for long life
- Diamond grit around the circumference of the bit allows it to rasp a larger hole if needed
- Holes on the side of the bit allow the removal of the material
- 4 in. long
- 1/4 in. diameter
- 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
- Ideal for decorative projects including glass blocks or bottles.