MaterialMade of high quality resin bonding system and premium alumina particles, anti-static and durable, high quality coarse sand, long term use, very suitable for metal work. wood and metal processing. Convenientsimple and convenient, fast and fast: start drilling, 8 holes, effective dust absorption, fast and convenient when using; The hook-and-loop sandpaper holder can quickly and easily remove and replace gravel, while reducing wear, also extends service life; random orbital sander, suitable for 5 inch diameter 125mm hook-and-loop abrasive, very good polishing effect: it is a uniform scratch pattern when used, its own stearate coating is used to prevent clogging in the greater extent, has a perfect cleaning effect and surface finish Scopewide range of applications: suitable for surface deburring, corrosion, paint, rubber, polishing gaskets welding, wood, glass, aluminum alloy, stone, plastic, leather and other materials These discs are designed for grinding metal surfaces, non-ferrous metals, steel, wood, plastic and polymers. This pack of 60 replacement sanding discs contains Five grits of sandpaper that you can change whenever the job calls for it - 40/100/ 150/240/400/600/800/1000/1200/2000. The grains are all printed on the back for easy identification. 8 pre-punched holes for dust collection, don't worry about dust management. HIGH DURABILITY - Made from durable premium aluminum oxide, providing fast and durable sanding. Suitable for 125mm random orbital sander Perfect size125MM diameter, suitable for use with random orbital sanders. 8 holes are designed for efficient dust pick-up. Premium aluminum oxide provides long sanding time that lasts longer than the rest. Hook-and-loop backing The durable design Velcro and hook means you can change sandpaper faster. Hook-and-loop sandpaper backing makes grit changes quick and easy and extends abrasive life.Professional Grade Premium sanding discs use fused alumina corundum for a cleaner cut and even grit on the paper. The sandpaper will work on most surfaces including wood, metal and fiberglass. Note: Due to manual measurement, please allow 0-2cm differs. Thank you for your understanding. The monitor calibration method is different. The color of the product shown in the photo may be slightly different from the actual product. Delivery quantity: 100 pieces