Complete Types: Include 100pcs sanding discs 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 bond system increases the service life Easy to Change: Durable reverse hook and loop makes changing sanding discs easier and more convenient; Hook and loop backing for faster mounting 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 Hook and Loop Fastener Design and Wide Uses - Durable hook and loop fastener and hook design, you can change the sanding paper more quickly. The 8-hole shaped thick paper base ensures that the sanding paper is not easily shredded during the polishing process. Which prevents damage to the grinder due to damaged sandpaper. The front side is sandpaper: using a unique electrostatic sanding 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. Package Contents: 100pcs Sanding Disc (60/80/120/150/220 Grit, 20pcs of each type) Size: 5 inch