General description The 100pcs 12mm 240 grit sanding discs are designed for use with rotary tools, featuring a zinc alloy mandrel. These discs are ideal for coarse grinding, sanding, and polishing various metals, wood sculptures, and non-metallic materials. Technical specifications Diameter: 12mm Grit: 240 Material: Laminated emery cloth bonded with resin Mandrel: Zinc alloy Compatibility and accessories Compatible with drills, hanging mills, and various electric grinders Suitable for grinding and polishing operations Usage Ideal for coarse grinding, sanding, and polishing Effective on metals, wood sculptures, and non-metallic materials