CRL Port-O-Holer Glass Drilling Tool with Vacuum Cup Putty & Accessories and will not bubble like

and will not bubble like silicone sealants

Easy to operate

You will be amazed at how efficiently and quickly the Glass Sling Shot works to break out the center of glass circles

CRL EPDM Rubber Setting Blocks are more durable than Silicone Rubber Setting Blocks

TT-S-00230C (COM-NBS) Class A for one-component silicone sealants

CRL Port-O-Holer Glass Drilling Tool with Vacuum Cup Putty & Accessories and will not bubble likeThe Most Portable Drilling Tool Available Uses Your Own Cordless or 110V AC Power Drill With GFI Device Drills Up to a 2" (51 mm) Hole Using Your Own 3 8" (9. 5 mm) Shank Plated Diamond Drills The Port O Holer Glass Drilling Tool drills holes up to 2" (51 mm) in diameter in glass and mirror, regardless of the location. All you need is your own cordless or 110V AC Power Drill, and you are ready to drill. Never has there been a tool that is so simple