Gator, 4 Pack, 5", 150 Grit, Aluminum Oxide Sanding Discs, Quality Red Resin Sanding Disc Is Designed Specifically For Power Tools, For Use On Wood, Metal, Drywall, Fiberglass & Painted Surfaces, Fits 5" Backer Pads, The Stick On Adhesive Holds Securely Without Slipping So You Can Smooth Large Surfaces, Resin Bonded To Resist Heat & Humidity For Longer Life, Anti-Clog Stearate Coating Reduces Particle Build Up, Keeping The High Performance Grain Exposed Longer.