[CNC Machining Process]: The middle screw of this sander allows for easy control of the opening size and sandpaper curvature, facilitating seamless adaptation to various types of curved s. aluminum alloy [for models polishing tool]: designed for figurines, this tool meets all your specific sanding needs,curved model sander,curved sanding tool for models [PORTABLE AND EASY TO USE]: With its compact and design, this curved polishing tool is convenient to use, store, and carry. The hollow handle bottom design allows for effortless hanging storage. [HIGH-PERFORMANCE CURVED SANDER]: This handheld grinder is ideal for polishing and sanding model's curved s, creating a textured finish that enhances the overall appearance and practicality of the model. [HIGH-PERFORMANCE CURVED SANDER]: This handheld grinder is ideal for polishing and sanding model's curved s, creating a textured finish that enhances the overall appearance and practicality of the model. Color: As shown Material: Aluminum Alloy Package Contents: 1*grinder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.