Diamond coating is suitable for polishing the stone surface while working, and the polishing effect is good. Suitable for a wide range of materials from coarse to fine: the finer the sand, the better the finish; the coarser the sand, the better the finish. Help you quickly solve problems such as edge chipping, burrs, and edge grinding that you often encounter in life. Portability: This product is small in size and light in weight, so it is very convenient to carry.Ergonomic design: This product adopts ergonomic design, which is very convenient to use. This grinding tool can be widely used in stone polishing, tile trimming, glass burr trimming, metal polishing and renovation, wood deburring, etc. Product name: diamond polishing block Type: 60 , 100 , 200 , 400 size: 9.1 x 6 x 3cm Material: Diamond + sponge colour: As Shown Package Contents: 4 x Diamond hand rubbers 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.