●Longest Lasting: Superior quality sanding discs made with super coated aluminum oxide corundum thats fused with zirconia alumina. It delivers a fast, exceptionally long-lasting sharp cut with a consistent scratch pattern. It has maximum resistance to clogging and loading, increasing your productivity and reducing material consumption. ●Used on Wood, Metal, or Plastic: Tough fracture-resistant adhesive backed sandpaper sheets are designed for grinding, shaping, deburring, blending, and finishing wood, rubber, plastic, stone, or metal surfaces. ●Strong Adhesion: Self Stick Sandpapers has good adhesion. Easy on. No Slip. It also for dry and has long lasting time. Strong pressure-sensitive adhesive allows sand paper discs to attach easily to your Random Orbital Sanders or DA sanders. ●Premium Material: Premium 6 inch PSA sanding disc is made of premium quality aluminum oxide grain, the grit is tight and the particles will not fall off.