Features [Sanding Sponge Block] The sponge polishing block is made of aluminum oxide and high density sponge, with high abrasion resistance and not easily cracked by water washing. [Dual Use] The high density sponge sanding block can be used for both wet and dry applications and can be ground with water for a long time. [Easy to Grip] Our grit blocks remove dirt effectively and are easy to grip and use, especially in hard to touch areas in the middle. [60‑320 Grit] The sanding sponge has 60‑320 grit specifications for long term use, providing you with good grinding and polishing results and a brighter surface. [Simple Operation] Our high density sponge sanding blocks are easy to use, with a incisive sanding surface and high grinding efficiency. Specification: Item Type: Sanding Sponge Block Material: Aluminum oxide, sponge Color: Blue Use: For metal and non metal grinding and polishing, furniture grinding, metal antirust, wood products, etc. Package List:6 x Sanding Sponge Block Package List 6 x Sanding Sponge Block