Features:* Diamond coated is suitable for grinding stone sureface during operation and has good polishing performance.* Suitable for a variety of materials from coarse to fine: the finer the sand, the better the polishing effect; The coarser the sand, the better the polishing effect.* Help you quickly solve the problems you often encounter in life, such as chipping, burrs, and edging.* Portability: This product is small and lightweight, which is very comfortable to carry.* Ergonomic Design: This product adopts ergonomic design and is very comfortable to use.* This grinding tool can be widely used in stone polishing, trimming tiles, trimming glass burrs, polishing metal and renovation, wood deburring, etc. Specifications:* Product Name: Diamond Polishing Grinding Block * Manufacturing Process: Electroplating * Material: Diamond + Sponge * Size: About 90*55*30mm/3.54*2.16*1, 18in* Type: 60#, 100#, 200#, 400#* Quantity: 4pcsPackage Included:4*Polishing PadNote:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.