Package Contents: 50 pieces Circular Sanding Disc (80 # 120 grit, 25 Discs per Grit Size). High Quality: Sanding disc is equipped with a paper base Thick D-class, made of high quality alumina with abrasion resistant sand, high strength resin bonding system increases service life. Easy to Change : Durable reverse velcro makes changing sanding disc more easy and convenient; Hook and loop support for faster assembly. For Size: 125 mm/5 inch in diameter, with 8 pre-drilled holes for dust extraction, suitable for Orbital Sanders/Sanding/Polishing/ Remove rust. Multipurpose Sanding Discs: Suitable for grinding polishing wood, jewelry, glass, stone, car, machinery, metal, non-metal, rubber, leather, plastic etc. < /ul> LRFR is committed to providing each customer with the highest possible quality of customer service.