34 Inch B20 Edges Demi Half Bullnose Vacuum Brazed Diamond Profiler Router Bit Profile Wheel with 58-11 Thread for Granite Concrete Marble Countertop$$Tools & Hardware Other

3/4" (20mm) radius demi-bullnose shape Vacuum Brazed Diamond Grit: 35/45, coarse Use on polisher or grinder with 5/8"-11 Thread Both Wet or Dry in use , recommend speed 3500- 4000 RPM Works great for grinding granite,marble ,etc stones. and concrete tiles countertops edges