Package of 25, 3" 36 Grit Sanding Discs. Professional quality Sanding & Grinding Discs will sand, level, strip, polish, deburr, remove rust and prep all types of surfaces. Makes quick work of any grinding, sanding and surface preparation task. These are Roloc / Rolok Style discs, just one quick turn and the disc is securely locked onto the included 3" Sanding & Polishing Mandrel. Simple and easy to use with your air, electric drill, die grinder and rotary tools with a 1/4" chuck or collet.