Diamond Polishing Drum Wheels are designed for polishing inside radius surface of undermount sink. They are much more easier than general flexible diamond polishing pads to use when polishing inside surface of sink. Wet polishing will result in better shine and also the polishing wheels will last longer. With 5/8-11 thread or M14 thread, the wet diamond polishing drums can fit most handheld polishers and grinders. There are 7 different grits including grit 50 100, 200, 400, 800, 1500, 3000.
