Quantity and practical set - package includes 200pcs sanding disc pads, 10 grits, 20 pieces for each grit: 80, 180, 240, 320, 400, 600, 800, 1000, 2000, 3000; 1pc 1/4 inch shank backing pad and 1pc soft foam buffering pad, large quantity to meet your different polishing needs. Superior material - made from aluminum oxide abrasive, durable and anti-static, useful for corner cleaning and polishing on metal, wood, jade, and other materials. Soft foam buffering pad - the sanding discs kit includes 1pc soft foam buffering pad, ideal for reducing vibration during use. Please ensure the soft foam buffering pad is securely attached between the sanding disc and the backing pad before use. Hook and loop back - the diameter of the hook and loop sanding pad is 2 inches, compatible with most rotary tools such as die grinders, air grinders, and electric drills. Warm note: these sanding disc pads are designed to be used with a 2-inch backing pad and are not suitable for adhesive sticker type pads. Please clean the surface and replace any worn sanding pads before use. Specifications: Color: brown Material: Alumina + Sponge Pad size: 2 inches Back type: hook and loop Shank diameter: 1/4 inch Shank length: 1.8 inches Note: These sanding discs are consumable items; the 200-piece set allows for easy replacement. For safety, always wear protective eyewear to prevent injury from debris during operation. Package includes: 20 x 80 grit sanding discs 20 x 180 grit sanding discs 20 x 240 grit sanding discs 20 x 320 grit sanding discs 20 x 400 grit sanding discs 20 x 600 grit sanding discs 20 x 800 grit sanding discs 20 x 1000 grit sanding discs 20 x 2000 grit sanding discs 20 x 3000 grit sanding discs 1 x hook backed panel 1 x soft foam buffering pad 1 x 1/4-inch metal shank Content is limited to the above items; other accessories are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error is +/- 1-3cm.