Smooth and Efficient Sanding: With 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 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 , 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.