HIGH QUALITY: Made of high quality aluminum oxide and high strength resin, which makes the sandpaper more durable and anti-static. EASY TO USE: The disc sandpaper has a durable Velcro closure, Velcro closure for quick installation, 8 vacuum holes to prevent clogging, sturdy and durable, easy to install and remove. Wide Application: The sandpaper can be used for sanding and polishing metal, wood, leather, plastic, stone, glass and other materials. It is widely used in hardware mold, automotive painting, shipbuilding, carpentry, furniture, woodworking, handicrafts and other industrial fields. GOOD POLISHING RESULTS: The newly developed non-marking coating minimizes blockages and pilling, ensuring better surface finish and perfect cleaning and polishing results.