Specifications: Polishing pads and sanding discs are waterproof and reusable. Each light only needs 3 pieces of sanding discs (p2000, p5000, p10000), and this set can be used on up to 4 lights. You firstly use the polishing pad, and then use the sanding discs. The principle is low grain to high grain (P240-P400-P800-P2000-P5000-P10000). Item Name: Car Light Repair Kit Material: Sandpaper + Sponge Quantity: 21Pcs/Set Features: Car Light Restore Tools, Polishing, Sanding, Reusable Holder Size: 7.5cm x 5.5cm/2.95" x 2.16", Pad Diameter: 7.5cm/2.95" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 3 x Polishing Pad (P240/P400/P800) 15 x Sanding Disc (P2000/P5000/P10000, 5Pcs for Each Size) 1 x Back Up Sanding Pad 1 x M16 Drill Adapter 1 x Sponge Buffer