4 Common Grit Set: Providing you with 4 commonly grit combinations(40/100/180/240 grits), its an essential choice for home polishing. Good Material: Made from alumina granules, which is durable and antistatic, it can provides long-lasting and efficient sanding, makes sanding easier. 8 Holes Design: Back of napping makes grit removal and replacement quick, 8 holes is designed for efficient dust extraction. Universal Compatible: Suitable for orbital sanders with a diameter of 125 mm, e.g. from Bosch, Black & Decker, DeWalt, Makita, Metabo, etc. Polishing and rust removal: Used with power tools, pneumatic tools, grinders. Ideal for woodworking, rust removal, polishing metal, plastic, leather, rubber and glass.