Variable Speed Polisher 4 Inch Granite Marble Wet Polishing Kit with Diamond 18 Pads 5" Wet Variable Speed Polisher (with GFCI Breaker, 900W, 500-4500 RPM). 17 Pieces of 4" (3mm Thick) Polishing Pad for granite marble concrete: 3 Pcs X Grit 50 100 200, 2 X Grit 400 800 1500, 1 X Grit 3000 Buff. 1 Pcs of 4" Rubber Velcro Backer/Pad Holder. 1 Pcs of FREE GIFT DVD Copy (tells you about step-by-step polishing).