60320 GRIT: The sanding sponge has 60320 grit specifications for long term use, providing you with good grinding and polishing results and a brighter surface. EASY TO USE: Our high density sanding blocks are easy to use, with a incisive sanding surface and high grinding efficiency. WET AND DRY: Our high density sanding sponges can be used for both wet and dry applications and can be ground with water for a long time. REMOVE DIRT: Our sanding sponges remove dirt effectively and are easy to grip and use, especially in hard to touch areas in the middle. DURABLE MATERIAL: This sanding block is made of aluminum oxide and high density sponge, high abrasion resistance, not easy to be washed and cracked. Colour:Photo Color Material:Aluminum oxide + sponge Package Contents: 6 x Sanding Sponge 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.