(a) 100 Pieces of 4 Diamond wet dry (wet use recommended) Polishing Pad for granite marble concrete travertine polish. 18 X Grit 50 100 200 400. 7 X Grit 800 1500 3000 6000. (b) 15 Pieces of 4 Inch Diamond Ultra Wide Segment Turbo Row Segment Grinding Cup Wheel Non Threaded. Inner hole diameter is 7/8″-5/8″. (c) 25 Pieces of 4 Inch Diamond Segmented Saw Blade for stone concrete cutting Non Threaded. Pad : 3.2mm thickness. Recommend 2500 – 5000 rpm (grinder or polisher speed must be lower than 5000 RPM when using polishing pads). Pad: wet or dry use (wet use recommended).