Feature:--These sanding papers are made of aluminum oxide, durable and not easily clogged. --Ideal for cleaning and polishing, and can be used together with a polishing agent to form a smooth surface.--These sandpapers are widely used for surface cutting and polishing of automobiles, motor metal products, furniture instruments, handicrafts, plastics, leather, and stone.Specification:Product Name:1 Inch Sanding Discs Pad with 1/8" Shank Backer PlateMaterial: aluminium oxideSize of pad: 1 inchColor: reddish brownGrit: 100 180 240 1500 and 3000Diameter of shank: 1/8 inchPackage Included:60 x 100 grit sandpaper60 x 180 grit sandpaper60 x 240 grit sandpaper60 x 1500 grit sandpaper60 x 3000 grit sandpaper1 x Backer PlateNote:Due to light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/- 1-5mm.