Very suitable for granite, concrete, marble, stone, ceramic tiles, etc.The pad/back support has water inlet holes and can be used for wet polishing.Note: The color of this product is random and cannot be size:80mmMaterial:Diamondcolour:Random ColorPackage Contents:2 x 50 grinding plate2 x 100 grinding plate2 x 150 grinding plate2 x 300 grinding plate2 x 500 grinding plate2 x 800 grinding plate2 x 1500 grinding plate2 x 2000 grinding plate2 x 3000 grinding disc2 x connecting rod2 x palletOnly 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.