1. Sanding discs are made from aluminum oxide, designed for high speed sanding and removal, delivering fast and long lasting cut.2. Hook and loop sandpaper backing make easy for installation and removal, simplify your work.3. Made from high-strength aluminum oxide grain textile; Bonded with resin that is heat and load resistant.4. Durable aluminum oxide sand paper is good choice for grinding and polishing on metal and non-metal, wood, rubber, leather, plastic, stone, glass and other materials.5. The round sanding sheets can be used in automotive, industrial, woodworking, marine and more.6. Please Note: Backing Pad is not included here!Specification:Product Name: Sanding DiscMaterial: Aluminum Oxide, PaperSize: 125mm / 5 inchGranularity: 100 GritFeature: Flocking BackPackage Content: 20 x Sanding DiscsWeight: 156g; Color: Blue