Full Types: Include 50 pcs different grit sanding disc: 60# 80# 120# 150# 220#, 10pcs 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 service life Easy to Change: Durable reverse velcro makes sanding disc change more easy and convenient; Support hook and loop 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 according to your needs Package Contents: 1 x SPTA HGSD8KMIX Sanding Disc 50pcs (60/80/120/150/220 Grit, 10pcs 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 types of grits - 60/80/120/150 grits /220, 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. The front side is sandpaper and reverse flocking <p >The front side is sandpaper: using a unique electrostatic sandblasting process, using first-class sandpaper material, the sand particles are uniform, not easy to fall off the sand; reverse flocking: anti-flocking, strong adsorption, easy to deflect, high speed operation does not fall off. Easy to install Velcro fastener design and wide uses - Durable Velcro fastener and hook design, you can change the sanding paper faster. Wide range of uses The 8-hole shaped thick paper base ensures that the sanding paper is not easily shredded during the polishing process. This prevents damage to the grinder from damaged sandpaper. Ideal for woodwork, rust removal, polishing metal, plastic, leather, rubber and glass. High quality The 8-hole shaped thick paper base ensures that the sanding paper is not easily torn during the polishing process. Which prevents damage to the grinder due to damaged sandpaper. 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! Carbonized waterproof paper You can add water to grind according to the needs of the work, without affecting the grinding effect! Effect is good Specially developed for professionals and enthusiasts. Whether at home or in the workshop, SPTA sandpaper is your best partner. lucky to meet Note: The data is all manually measured, please allow 1-3cm error , due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.