Specifications: Diameter: 2 inch Color: Brown Grit/Grade: coarse, Approx 80 Grit 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: 50 Pack Features: Fast Cut Rate Resist Loading Run Cool Predictably, Consistent, Uniform Finish 2X Longer Lifespan than Conventional Non-Woven Discs Quick and Easy Disc Change Medium Grit - Good Choice for Blending, Deburring, Cleaning Package inclued : 50pcs Sanding Grinding Disc