General description Practical Grinding Wheel Set - This set includes 300 pieces of 50mm sanding discs with 10 different grits: 80, 180, 240, 320, 400, 600, 800, 1000, 2000, and 3000, with 30 pieces for each grit. It also comes with 1 piece of 1/4" rod holder pad and 1 piece of soft foam pad, providing a large quantity to meet various polishing needs. The discs are made of durable aluminum oxide abrasive, making them effective for cleaning and polishing surfaces such as metal, wood, and jade. Technical specifications Material: Aluminum Oxide Pad Size: 50mm (2 inch) Color: Reddish Brown Backing Technology: Velcro Grit: 80, 180, 240, 320, 400, 600, 800, 1000, 2000, 3000 Shank Diameter: 6.35mm Shank Length: 1.8 inch (45.8mm) Compatibility and accessories Compatible with 50mm pad Includes 1 piece soft foam buffering pad Includes 1 piece 1/4" rod holder pad Installation Ensure the soft foam pad is firmly connected to the grinding and cushioning discs before use. Clean dust and replace old