Check the listing for details. 25PCS Surface Conditioning 2 in Roll Lock Sanding Grinding Discs for Die Grinder. Color: Blue, Condition: New. Listed at 19.99 USD. Feature UPGRADEED ALUMINUM: Roll lock quick change disc are made for high-quality professional aluminum oxide.We have done a lot of testing to give you the most satisfying experience in order to give you best product. QUICK CHANGE: Unique safety torque spiral design of the roll lock disc makes it easy to disassemble and also makes the connection between sanding disc and holder/tray firm when rotating, ensuring a steady working and not fall off. LONGEST LASTING: With good elasticity and plasticity, the 2 inch sanding disc set are suitable for objects of different shapes. Quick heat dissipation to avoid overheating deformation or discoloration. WIDE APPLICATION: This surface conditioning disc kit applies for rust and paint removal, sanding, buffing, and polishing jobs. Perfect for conditioning on wood, metals, steel, plastic, rubber, and paint removal on any surface. Wide used in auto body and automotive work, such as rotor finishing, and on motorcycles, boats and so on. Specifications Diameter: 2 inch Color: Blue Grit/Grade: Fine Disc Type: Quick Change Disc Abrasive Type: Non-Woven Abrasive Material: Aluminum Oxide Backing Material: Nylon Scrim Backing Weight: Y-Weight Bonding: Cured Adhesive Resins, Resin Over Resin Attachment Type: TR (Plastic Button) Maximum RPM: 25,000 Recom. RPM: 3800-5000RPM Quantity: 25