Diamond Granite Polishing Pads 4 inch Wet/Dry 14 Pce + 4" Turbo Super Thick Cup Wheel 14 Pieces of 4" Diamond Polishing Pad for granite marble concrete. 3 X Grit 50 100, 2 X Grit 200 400, 1 X Grit 800 1500 3000 10000Buff. Plus 1 Piece of Diamond 4" Super Thick Segment Turbo Row Grinding Cup Wheel. (Non Threaded. Inner Hole diameter is 7/8"-5/8").