【Material】:Sanding Sponge with High Density Sponge as The Base Material, Using High-Quality Ore Coating, With Fine Ore on All Sides ,Be Used for Both Wet and Dry , Sharp and Wear-Resistant, Lasts up to 5x Longer Than Standard Sandpaper, This is a Very Good Hand Polishing Tool. 【High Quality】:Sponge has Good Elasticity and High Density Sand , Polishing Efficient is Higher Than SandPaper, So Sanding Block and SandPaper Mesh is Not The Same . Sanding Sponge Type 60# is Equivalent to The Coarseness of Sandpaper 100P, 80#=120-180P, 100#=240-400P,120#=500-600P,180#=800P,220#=1000P. 【Easy to use】:High Density Sponge Has Good Elasticity, Distortion Does Not Break The Surface; It Can Fully Absorb Moisture, Reduce The Heat Generated by Friction, Sanding Sponges Very Suitable for High-Density Material Polishing, Easy To Clean, And Can be Recycled. Attention Should be Paid to Polishing Process From Coarse to Fine, The Granularity Becomes Finer as The Number is Getting Higher, The Polishing Will Have More Effect. 【Multiple Uses】: Sanding Sponges is Widely Used for Polishing All Kinds of Metal and Wood Products, Can be Used for Wood Furniture Refurbish, Paint Removal and Polishing, Polishing Metal and Jade, Polishing Rusting Tool, Polishing Plastic Products, Cleaning Kitchen Hearth, Etc. Sanding Sponge Can be Cut Into Small Pieces, Polishing Any Irregular Geometric Surface and All Kinds of Small Workpiece. 【Packaging】:Including 60#, 80#, 100#, 120#, 180#, 220# Different Particle Size Sanding Sponge Two Each, a Total of 12.