IIT 82077 36 Grit 3" Sanding Discs, 25 Pack Includes 25 Roloc / Rolok Style 36 Grit Sanding Discs Threaded backs screw securely to the mandrel for quick disc changes Quickly sand, grind, level and strip surfaces 3" Roloc / Rolok Style Holder For Sanding Discs Easy to use with 1/4" Shank Mandrel