[Product Includes] 18 pieces of sanding sponges (60 80 100 120 180 220 grit/3 pieces each); There are different combinations of coarse, medium, fine and ultra-fine sand blocks. [Product material] Brown corundum sand + high-quality sponge; wear-resistant and durable [Reusable] The sanding block is soft and moderate, can be reused, and will not shed sand; the sanding pad can be used both wet and dry, has good elasticity, and is not easy to get dusty. [Wide range of uses] Our double-sided grinding sponge is widely used in DIY polishing, plastic shell polishing, metal rust removal, woodworking furniture polishing, amber jade polishing, etc. Colour:Blue Material:Sponge + sandpaper Size:About 4.72 x 3.94 x 0.5 inches/120x100x12 mm (each) Package Contents: 18 * 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.