Sinkwork Kit for Cut & Polish Granite Undermount Sink Circle Cutting Cup Grinding Damo Hardin toolsmart 14 + 1 Pieces of 4 Inch Diamond Polishing Pad for concrete marble granite. 1 Piece of 5" Diamond Turbo Convex Blade for circle shape cutting. 1 Piece of 4" Diamond SUPER Thick Segment Turbo Row Grinding Cup Wheel. 1 Piece of 2" x 1-5/8" Zero Tolerance (Metal-Filled) Diamond Drum Wheel. 7 Pieces of 2 Inch Polishing Drum (Grit 50 100 200 400 800 1500 3000).