This auction/package includes (a)-(g): (a) 20 Pieces of 4" Diamond Polishing Pad for granite marble concrete: 4 X Grit 50 100 200 400, 1 X Grit 800 1500 3000 6000BUff. (b) 1 Piece of 4" Rubber Bacler/Pad Holder (5/8"-11 Threaded arbor). Remind: Rubber backer's max capacity is 5000RPM. Please don't use it with high speed grinder/pad holder. (c) 1 Piece of 5" Diamond Turbo Convex Blade (for circle shape cutting. Inner hole diameter is 7/8"- 5/8", since washer / reducer included). (d) 7 Piece of 2" Diamond Polishing Drum for sink basin hole (1 X Grit 50 100 200 400 800 1500 3000). (5/8-11 threaded arbor). (e) 1 Piece of 4" Diamond SUPER Thick Segment Turbo Row Grinding Cup Wheel (5/8"-11 Threaded arbor). (f) 1 Piece of 2" x 1-5/8" Zero Tolerance (Metal-Filled) Diamond Drum Wheel (5/8 thread arbor). (g) 1 Piece of 2" X 1-5/8" Zero Tolerance (Resin-Filled) Diamond Drum Wheel (5/8 thread arbor). Do very good job for cutting of the stone, concrete sink hole. It is 1-5/8" height, it gives more room / space for working on both 1.25 Inch and 0.75 Inch sink cutouts