General description 105 pieces sanding disc set with 15 sheets of each grit: P40, P60, P100, P150, P240, P320, and P600, totaling 105 sheets of hook and loop sanding discs. Assortment of 7 grades of sandpaper from rough to fine to meet various polishing needs. High-quality alumina and high-strength resin construction for durability and better anti-static effect. Suitable for sanding, polishing, and rust removal from a variety of materials including metal, wood, rubber, leather, plastic, stone, and glass. Universally compatible with Ø 125mm random orbital sanders. Easy to use with durable hook and loop backing for quick assembly and 8 dust extraction holes for anti-clogging. Technical specifications Diameter: Ø 125mm Grits included: P40, P60, P100, P150, P240, P320, P600 Total number of discs: 105