Toolsmart 5" Wet Variable Speed Polisher PLUS FREE GIFT 4 Inch Diamond Polishing 12+1 Pad Concrete Marble Engineer Stone Granite Polishing Pads 5" Toolsmart Hardin 2014 Version Wet Variable Speed Polisher (GFCI Breaker, 800W, 500-4500 RPM). We always attach the lock ring nut with the polisher (Not many seller do it). The lock ring nut is for you to use this polisher with cup wheel and saw blade. 12 Pce of 4" Diamond Polishing Pad: 2 X Grit 50 100 200 400, 1 X Grit 800 1500 3000 10000Buff. 1 Piece 4" Rubber Backer/Pad Holder.