Bargain Diamond Drill Bits Core drill bits available in 7/8", 1", 1 1/8", 1 1/4", 1 1/2", 1 3/4", and 2" sizes.
Shaft fits standard power drills for boring holes in glass. Use with water to protect bit and keep glass cool. Make sure you dry the drill bit after use to avoid rusting.
If using a home drill, to drill successfully into glass your drill must be able to do 2000 revolutions per minute (rpm).