100% brand new and high quality. This grinding machine is primarily designed for creating crystal nails and polishing the surface or edges of nails. It features a soft 3D model surface and high-speed grinding with 4 adjustable speeds ranging from 3000 to 20000 RPM. For grinding hard materials, we recommend opting for a more powerful grinding machine. Package includes: 1 PC x Mini Electric Sander 6 PCS x Sanding Heads 1 PC x USB Cable Specifications: Item: Mini Model Electric Sander for 3D Printing Material: ABS Speed: 3000-20000 Adjustable Power: 100-240V 50-60Hz Charging: USB Color: Black / White / Blue Size: 16x2.4cm/6.3x0.94in Note: Please allow +/- 1-3cm error due to manual measurement. Thank you for your understanding. Monitors may not be calibrated the same, and the item color displayed in photos may differ slightly from the actual product.