200pcs sandpapers in 20 different grades: 80, 100, 180, 240, 600, 800, 1000, 1200, 2000, 3000, each type 10pcs. Size: 50mm. The items come with a 6.35mm backing plate. 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 long lasting 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 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 transforms your rotary tool into a versatile high-speed sander. Package Contents: 100 x Sandpaper Sheets, 1 x Sanding Pad, 1 x Snk, 1 x Sponge Pad. Tip: These sanding pads fit 2 inch backing, not suitable for self-adhesive sanding pads, please clean the dust and replace the old sanding pad before use. Features: Material: flocked sandpaper. Pad Size: 2 inch. Color: as the picture. Backing Technique: Hook and Loop. Grit: 80,100,180,240,600,800,1000,1200,200,3000. Sandpaper Size: 50mm. Sanding Pad Size: 50mm. Snk Size: 45mm x 6 mm. Pad Size: 50mm. Note: 1. These sanding discs are consumable so we offer 100pcs for easy replacement. 2. To avoid the 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 1-2mm differences due to manual measurement. 4. Please check the detailed information carefully before purcsing. Good quality product