【Material】: Sanding sponge uses high-density sponge as the base material, adopts high-quality mineral sand coating, 4-part coating, can be used in dry and wet state, sharp and wear-resistant. It is a good hand polishing tool. 【High Quality】: The sponge has good elasticity and water storage function, which can reduce flashing and improve work efficiency. High-density sand planting has higher grinding efficiency than sandpaper and its service life is 5 times that of standard sandpaper. It is an excellent substitute for sandpaper. 【Easy to Use】: The number of particles is printed on the frosted sanding block, easy to distinguish and use. In the polishing process, special attention should be paid to grinding from coarse to fine. The larger the number, the finer the particles and the better the polishing effect. 【Wide Application】: Sanding sponges are widely used for grinding all kinds of metal and wood products. It can be used for renovating wooden furniture, stripping and polishing