Aanraku Diamond Core Drill Bits for Glass Maximum Diamond Abrasive 1/8″ 2 Pack
Two pack of core bits manufactured by Aanraku. Use with a drill press (not a stained glass grinder).
For best results, drill bits should be used with a drill press that is set on the lowest setting. About 25 revolutions per minute works best.
Please read the instructions on the back of the package. There is a learning curve to drilling holes in glass.