Full Types: Include 100pcs different grit sanding disc: 40/80/120/180/320/600/800/1000/1500/2000, 10pcs of each type. Almost all polishing requirements are met.High Quality: Sanding disc is equipped with a heavy D-grade paper base, made of high quality alumina with abrasion resistant sand, high strength resin bonding system increases the lifespan. Easy Change - Durable reverse velcro makes changing sanding disc easier and more convenient Hook and loop backing for faster mounting.Operation Applicable: 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 100pcs Ponage Disc (40/80/120/180/320/600/800/1000/1500/2000 Grit, 10pcs of each type).