Multiple sizes and quantities - comes with 120pcs sanding discs, with 1/4 inch shank holder and 1pc soft foam protective pad; 10 pieces of each grit: 60/80/ 120/ 180/ 240/ 400/ 600/ 800/ 1000 / 1200/ 2000/ 3000, 120 pieces in total High Quality Material - Made of aluminum oxide abrasive, durable and anti-static, ideal for cleaning and polishing corners, such as polished metal, wood, jade, etc. Soft Foam Buffer Pad - The sanding disc set includes a shock absorbing pad made of 1 piece of soft foam, ideal for reducing tailing in use. Convenient to Use - 50mm diameter, suitable for most rotary tools such as grinders, air grinders, electric drills, etc. Important Note: These sanding disc pads fit 50mm backings, not suitable for sanding surfaces. Please clean the dust and replace the sanding surface before using it. Insert it