Backing: Buckle hook, easy and quick paste, durable and practicalWide range of applications: from coarse to fine 10 paper classification to meet all general polishing requirementsSand discs made of alumina abrasive, durable, anti-static. The larger the sand, the better the polishing effect.Suitable for use with random orbital . Hook and loop support, and -drilling 8 dust extraction, easy to use.For metal and non-metallic, wood, rubber, leather, plastic, stone, glass and other materials grinding, polishing and so on.Abrasive: AluminaBack to Technology: Hook and LoopColor: reddish brownDiameter: 5 inches-drilled 8 holesSize: 125mm in diameter8 pieces per sandpaper: 40/60/80/100/150/120/180/240/320/400, a of 80note:For electric drill should be added converter.Sandpaper needs to be affixed to the pasted disc for fixed disc sanding.Package Contents:8 x 40 sanding disc8 x 60 sandpaper disc8 x 80 grit sand disc8 x100 grit sand disc8 x 120 grit sand disc8 x 150 grit sand disc8 x 180 grit sand disc8 x 240 grit sand disc8 x 320 grit sand disc8 x 400 grit sand disc