• Glass Drilling Bit
• Mfr. item number - 663DR
• Drills holes in both flat & 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 material
• Includes cutting oil
• 1/4 in. bit diameter
• Weight: Approximately .07 pounds
• Shipping Dimensions: Approximately 3.95 x 1.95 x 1.29 inches.