DRILLPRO 120pcs 2 Inch Sanding Discs Pad with 1/4'' Shank Backer Plate and 2pcs Sponge Cushions for Drill Grinder Rotary Tools 60-3000 Grit Sandpapers MULTI-GRIT SANDPAPAER SET - Our sanding discs set provides you with the multi-grit sandpaper you need. You will get 1pc 1/4'' shank backer plate ,2pcs sponge cushions and 120 total sander pads of 10 different grades including 60 grit, 80 grit, 100 grit,180grit, 200 grit,400 grit,600 grit,800 grit,1000 grit,1200grit,2000 grit,3000 grit. SPONGE CUSHION- These sandpaper set include 2pcs Sponge cushions, protecting the surface of the disc and extending the life of the sanding disc, pecfect for reducing shank while using. Please ensure that the sponge cushion have connected with the sanding discs and the backing pad tightly before using. HOOP and LOOP BACKED - They are light weight and really easy to assemble, just stick it to the plate or Sponge cushions . 2 Inch diameter, Which is suitable for most kinds of rotary tools, such as die grinders, air grinders, electric drill for 6.3mm connecting rod. ALUMINUM OXIDE ABRASIVE - These sandpaper discs are made of aluminium oxide, which is durable and anti-clogging. The number of the grits mean the degree of roughness, which affect the polishing effect, so you can easily choose the suitable specification grits.Perfect for corner cleaning and polishing, such as polished metal, wood, jade and so on. KINDLY REMINDER - These sanding disc pads match with 2 inches backing pad, not suitable for adhesive sticker sanding pad, please clean the dust and replace the old hook and loop sanding pad before use, you should add converter when it's applied to an electric drill.