CRL DRB14 Round Edge Diamond Grinding Bit ...
The CRL Diamond Grinding Bit produces a round edge on 3/16" and 1/4" (5 and 6 mm) glass. This top quality bit edges cut-outs quickly and efficiently while reducing the risk of cuts. Diamond coated edge grinds glass edges smoothly. Great for doing touch up work on the jobsite. The diamond grit is 220.