●MEET ALL YOUR NEEDS: comes with total 180 pieces abrasive sand paper in grit 60 80 100 150 240 400 800 1200 2000 3000 5000 10000(15 pieces each grit), 1 piece Air-Tool Backer Plate with 1/8" & 1/4” shank, 1 piece backing pad with 1/4” round shank, 1 piece soft foam buffering Pad, 1 piece wool pad, 1 piece wave orange polishing pad and 1 piece flat yellow polishing pad. ●THREE WAYS CONNECT: The Air-Tool Backer Plate with 1/8"&1/4" Shank can work with any air or electric drill, die grinder, and other rotary tools for the utmost sanding control, 1/4 inch Round shank works better with pneumatic tools. ●SOFT FOAM BUFFERING PAD: reducing shake, ideal for uneven surface polishing such as wooden bowls, protect against damage to backing pad and convenient for replace discs. ●GOOD ADHESIVE: Hook and loop Velcro backing, easy to stick but not easy to fall off when using. ●APPLICATION: Widely used in the grinding and polishing of metal and non-metal, wood, rubber, leather, plastic, stone, glass and other materials.