Square Sandpaper: The sanding sheets are made of high quality alumina granules and high strength resin to prevent pilling, anti-static and anti-blocking sander sandpaper, good choice for sanding and polishing. Different Grits: 80 grit square sanding disc, 30 sheets in total which can meet almost all your general polishing requirements Suitable model: The attachment capacity of the hook-and-loop sanding pads of each sheet allows it to be used with mechanical/electric sanders of any brand Specifications: Each sandpaper measures approximately 93 x 185 mm. With grain mark on the back, the smaller the number, the rougher the polishing effect, the larger the number, the finer the polishing effect. Please choose to use it according to your needs. Widely Used: Sanding pads are widely used for wiping off rust on metal surfaces and polishing or grinding non-metallic objects, such as plastic, wood, rubber, leather, glass, stone and more.