Package: Includes 40pcs 2-inch flap discs (40/60/80/120 Grits, each grit is 10 pcs) and 1 pcs 1/4 shank disc holder. High Performance: 2-inch grinding discs are made of premium zirconia and alumina, wear-resistant and robust, ensuring long-term use. RPM: 12,000 to 14,000 Function: Well-designed for cleaning, deburring, removing rust, leveling, stripping, buffing, light grinding, and more, suitable for flat or side surfaces Easy to Install: This flap disc set features a torque spiral on the back for inserting the sanding disc pad holder more tightly, which ensures your safety while using, as well as changing the discs quickly for more efficient work Wide Application: The 2-inch roll rock discs work on metal, wood, and plastic. This quick-change disc could fit most rotary tools, die grinders, sanders, air grinders, and other power tools

Package Includes; 10 x 40 Grit Quick Change Flap Disc 10 x 60 Grit Quick Change Flap Disc 10 x 80 Grit Quick Change Flap Disc 10 x 120 Grit Quick Change Flap Disc 1 x 1/4-inch disc pad holder Materials: Zirconia Alumina Compitable Tools Rotary tools, die grinder, sander, air grinders, and other power tools.Usage: Grinding, cleaning, sanding, deburring, stripping, buffing, and removing rust,dust.