Complete Types: Include 100 pcs sanding disc of different grits: 60# 80# 120# 150# 220#, 20pcs of each type. Almost all polishing requirements are met High Quality: Sanding disc is equipped with a thick D-class paper base, made of high quality alumina with abrasion resistant sand, high strength resin bonding system increases the duration of life Easy to Change: Durable reverse velcro makes sanding disc change more easy and convenient; Hook and loop support for faster assembly Applicable Operation: Suitable for grinding and polishing metal, non-metal, wood, rubber, leather, plastics, stone, glass and other materials. Very convenient and you can order as you need Package Contents: 1 x Sanding Disc 100pcs (60/80/120/150/220 Grit, 20pcs of each type) Sandpaper material Sandpaper is made from alumina granules. It is durable and anti-static and provides long-lasting and efficient sanding. Meets most polishing requirements With 5 kinds of grits - 60/80/120/150/220 grits, from coarse to fine, can meet all your needs. The higher the number, the finer and smoother it is, and the smaller the number, the thicker and sharper it is. Easy to install Velcro Attachment Design and Wide Uses - Durable Velcro attachment and hook design, you can change the sanding paper faster. 8-hole design Good heat dissipation performance, anti-blocking and wear-resistant; unique electrostatic sand planting process, sand particles uniform, not easy to fall sand!