200 sandpapers in 20 different grades: 80, 100, 180, 240, 600, 800, 1000, 1200, 2000, 3000, 10 pieces of each type. Size: 50 mm. The items come with a 6.35 mm backing plate. The different grits, from coarse to fine, can help you do a proper and efficient polishing job. Premium Material: Made of aluminum oxide abrasive, durable and anti-static, these sanding discs are durable and easy to apply or remove. Useful for cleaning and polishing corners, such as polished metal, wood, jade and so on. Great Grinding Choice: Good choice for sanding and polishing wood, leather, stones, glass, metal. Suitable for smoothing inside and outside curved edges, surface preparation and suitable for most electric grinders. The sandpaper set is perfect for sanding and polishing (wood, metal, casting for polishing purposes). Hook and Loop Velcro: The diameter of the sanding pad on the back is 2 inches, suitable for most types of rotary tools, such as die grinders, air grinders, electric drills, etc. Exceptional value and quality transform your rotary tool into a versatile high-speed sander. Package Included: 100 Sheets Sandpaper, 1 Sanding Pad, 1 Shank, 1 Sponge Pad. Tip: These sanding pads fit 2" backing pad, not suitable for self-adhesive sanding pads, please clean the dust and replace the old sanding pad before use. Specifications: Material: Flocked Sandpaper Pad Size: 2" Color: As picture shown Backing Technique: Hook & Loop Grit: 80,100,180,240,600,800,1000,1200,200,3000 Sandpaper Size: 50mm Sanding Pad Size: 50mm Shank Size: 45mm x 6mm Backing pad size: 50 mm. Note: 1. These sanding discs are consumable, so we offer 100 pieces for easy replacement. 2. To prevent pressure from damaging your backing plate, please work it at a slow speed when starting, and increase the speed gradually after the backing plate rotates. 3. Please allow 1-2 mm differences due to manual measurement. 4. Please check the detailed information carefully before purchasing.becomeveryrich