Smooth and Efficient Sanding: With durable aluminum oxide grain, these sanding discs are designed to deliver a smooth finish on a wide range of materials, from wood and metal to stone and glass. Quick and Easy Grit Changes: Featuring a convenient hook and loop sandpaper backing, these discs make it easy to switch between grits and extend the life of the abrasive, saving you time and money in the long run. Anti-Clog Coating for Longer Life: Our special anti-clog stearate coating helps prevent buildup on the abrasive surface, extending the performance and durability of each disk and ensuring a consistent finish every time This 9 inch sanding disk are widely used in car, wood projects, rubber, leather, plastic, stone, glass and other materials grinding, polishing Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Red Brown Material:Alumina Package Contents: 50x 9Inch 10Hole 40 Grit Hook-and-Loop Drywall Sandpaper Only the above package content, other products are not included. Note: Light reflection 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 +/- 1-3cm.