The diamond pads include grits 60 , 100 , 200 , 400 . One set can satisfy most of your polishing work The foam back of these diamond sanding pads are and light, which are suitable to hold The diamond hand pad can be used as granite polishing pads, concrete sanding pads and can be used in tile trimming, sanding stone, wood deburring, glass sanding, metal polishing renovation and so on Grit 60 polishing block, for fast and rough grinding, like polishing floor tiles and general . Grit 100 & 200 are medium rough, which could remove the details. Grit 400 polishing pad for fine polishing. Wet / Dry polishing are both OK, the wet polishing will be better The size of the diamond polishing pad is 3.6 x 2.4 x 1.2 in / 92 x 62 x 31 mm Material: Diamond Color as shown Package Contents: 4 x polishing pad Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.