【Perfect Size】: You will receive 6 different grits with 10 sanding discs each, 60 pcs in total, 10*P40, 10*P60, 10*P80, 10*P180, 10*P240, 10*P320 So you have the right sandpaper for every case. 【Good Material】: High quality aluminum oxide sanding discs Aluminum oxide sanding pads with special heat treatment have excellent polishing, sharpness and wear resistance. Durable and anti-static, good choice for sanding and polishing. 【Work efficiently】: The aluminum oxide grains used have high abrasion resistance and adhere reliably to the backing paper for convincing sanding from coarse to fine. 【Easy to use】: Velcro, easy and quick to stick, strong and durable, does not fall off, 8 holes when installed in use, easy to install and remove. 【Wide application】: For sanding fillers, primers, fillers, paints, metals, wood, thermosets, plastics, artificial stones.