Product name: Polished red sandpaper Gravel material: Ceramic alumina Particle size: 40 60 80 100 120 180 240 320 400 800 Material: alumina Compatible material: rubber About this project Product material : These mouse sandpapers are made of high quality aluminum oxide abrasive, durable and anti-static, ideal for general sanding, polishing and sanding. The larger the particle size, the finer the polishing effect. Velcro design: Each one is designed with Velcro, easy to install and remove, durable and practical, anti-static and non-clogging. EASY USE: Velcro sandpaper base allows quick and easy abrasive removal and replacement, extending abrasive life; 5" diameter for eccentric sanders. Wide range of applications: Coarse, medium and fine grades are available, suitable for metal and non-metal materials for a variety of difficult surface rust, paint, deburring and solder joints. Widely used for sanding and polishing wood, rubber, leather, plastic, stone, glass and other materials. Supplied quantity: 10 different types of sandpaper, grit 40 60 80 100 120 180 240 320 400 800 total 100 pieces of 10 pieces.