[Washable and Reusable]Can be used wet or dry,and also can be used directly in water.Because of own water storage function, it can reduce flushing and improve work efficiency. [Quality]Using high density sponges as base material,made from high-quality brown corundum with treatment and glue formula. the resilience is , plasticity is strong, and it is not easy to tear. [Specification]Grit on the sanding sponge, easy to distinguish and use, no need to put all the sand blocks together to compare, at a . [Use]Suitable for polishing flat and irregular surfaces,wet, dry, wood, paint, metal, plastic or drywall. Material:Brown corundum + sponge colour:brown Package Contents: 2 x 60 Grit Sanding Sponges 2 x 80 Grit Sanding Sponges 2 x 120 Grit Sanding Sponges 2 x 220 Grit Sanding Sponges 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.