6 different grit includes: 60, 80, 100, 120, 180, 220. Coarse, Medium, Fine... Sanding sponge Size: 4 x 2.8 x 1 inch. | Grit printed on the sanding sponge, easy to distinguish and use, no need to put all the sand blocks together to compare, at a glance. | Washable and reusable, can be used directly in water. | The sanding sponge using high density sponges as base material, made from high-quality brown corundum with special treatment and special glue formula. | Suitable for grinding any irregular geometric curved surface, wet or dry, portable and handy.

4 different grit includes: 60, 80, 120, 220. Coarse, Medium, Fine and superfine. Sanding sponge Size: 4 x 2.8 x 1 inch. | Grit printed on the sanding sponge, easy to distinguish and use, no need to put all the sand blocks together to compare, at a glance. | Washable and reusable sanding block, can be used directly in water. | The sanding sponge using high density sponges as base material, made from high-quality brown corundum with special treatment and special glue formula. | Suitable for grinding any irregular geometric curved surface, wet or dry, portable and handy.

8PCS 4 different grit includes: 60, 80, 120, 220. Coarse, Medium, Fine and Superfine. 2PCS/Grit. Sanding sponge Size: 4 x 2.8 x 1 inch. | Grit printed on the sanding sponge, easy to distinguish and use, no need to put all the sand blocks together to compare, at a glance. | Washable and reusable, can be used directly in water. | The sanding sponge using high density sponges as base material, made from high-quality brown corundum with special treatment and special glue formula. | Suitable for grinding any irregular geometric curved surface, wet or dry, portable and handy.