Features Reusable Design for Cost-Effectiveness: This product can be used multiple times, providing the equivalent of many ordinary sheets while reducing waste and saving you money Innovative Sponge Structure: Featuring an inner sponge construction, these discs are ideal for effectively grinding curved, spherical, and flat surfaces, ensuring versatility in your projects Versatile Wet and Dry Use: Designed for both wet and dry applications, these sanding pads offer convenience and flexibility, enabling you to tackle various tasks effortlessly Compatible with Multiple Polishers: These sanding discs can be used with both pneumatic and electric polishers, making them suitable for a wide range of tools and enhancing your workflow Perfect for Polishing Projects: Ideal for polishing phone shells and paint, these sanding sheets deliver a flawless finish, ensuring your projects look professional and polished Features: 1、Can be used repeatedly,equivalent to many ordinary sandpaper, it is practical and . 2、Inner sponge structure, suitable for grinding curved , spherical , plane. 3、Dry and wet, easy and convenient. 4、Both pneumatic and electric polishers can be used. 5、This product can be used to polish phone shells and paint . Specification: This product is sponge sand, without sand dropping. It is suitable for polishing and polishing the outer casing of the mobile phone. It can be used repeatedly for a number of ordinary sandpaper. The inside is a sponge structure, especially suitable for grinding arcs, arcs, etc., which can be well attached to the arc when grinding. It can effectively avoid the non-circle phenomenon caused by ordinary sandpaper grinding. Features: 1. Can be used repeatedly,equivalent to many ordinary sandpaper, it is practical and . 2. Inner sponge structure, suitable for grinding curved , spherical , plane 3. Dry and wet, easy and convenient. 4. Both pneumatic and electric polishers can be used. 5. This product can be used to polish phone shells and paint . Specification: Size: approx. 90 * 90 * 90mm / 3.5 * 3.5 * 3.5in Number of holes: 6 holes Thickn: 5mm Quantity: 4pcs Grit size: 300-400#, 1800-2000# (optional) Package list: 4 * Sandpaper Note: There are some errors in the manual measurement, thank you for understanding Package List