Hook and loop back - the diameter of the hook and loop sanding pad back is 2 inch, suitable for most kinds of rotary tools, such as die grinders, air grinders, electric drills, etc Soft foam buffering pad - the sanding discs kit include 1pc soft foam buffering pad, pecfect for reducing shake while using, please that the soft foam buffering pad have connected with the sanding discs and the backing pad tightly befor using Superior material - made from aluminium oxide abrasive, and anti-static, useful for corner cleaning and polishing, such as polished metal, wood, jade and so on Quantity and practial set - package include 200pcs sanding disc pads, 10 grits, 20 pieces for each grit: 80/ 180/ 240/ 320/ 400 /600 /800 /1000 /2000 /3000; 1pc 1/4 inch shank backing pad and 1pc soft foam buffering pad, large quantity to meet your different polishing need Warm note: these sanding disc pads match with 2 inch backing pad, not suitable for adhesive sticker sanding pad, please clean the dust and replace the old sanding pad before use them, Weight: 0.43541296745 Pounds, Manufacturer: Blisfulhoks