Premium Aluminum Construction: Made from robust aluminum alloy with oxidation resistance, ensuring stable function and lasting durability over time Secure Clamping Design: Features copper plated screws for firm sandpaper attachment, enabling thorough and controlled sanding on both flat and curved areas with strong grip Quick Sandpaper Change: Nut fastened mechanism allows easy paper replacement without difficulties, enhancing productivity during extended sanding tasks Accurate Production approach: Computer controlled machining creates neat openings and borders that rough areas, providing comfortable handling and enhanced finishing results Versatile Sanding Function: Suitable for various applications including rust removal and polishing, bringing workpieces to refined condition for different project requirements, Manufacturer: YIGZYCN