General description Includes a pack of 100 sanding discs with various grit sizes: 60, 80, 120, 150, and 220, with 20 pieces of each type. These discs are designed to meet almost all polishing needs. Technical specifications Diameter: 125 mm Grit sizes: 60#, 80#, 120#, 150#, 220# Number of holes: 8 Material: Aluminum oxide with a thick D-class paper base Usage Suitable for grinding and polishing a variety of materials including metal, non-metal, wood, rubber, leather, plastic, stone, and glass. Other information The sanding discs feature a sturdy Velcro fastening system for easy and quick changes.