Features:100% brand new and high qualityThis grinding machine is mainly used to make crystal nails and polish the surface nails or nail edges.And soft 3D model surface.High Speed grinding, equipped with 4-speed adjustable from 3000-20000. If you are grinding hard objects, we suggest that you buy a powerful grinding machine.Package includes 6 variable sanding heads and sanding tools.This machine may not be suitable for use with hard tools Package Includes:1 PC x Mini Electric Sander6 PCS x Sanding Heads 1 PC x USB Cable Specifications:Item: Mini Model Electric Sander for 3D PrintingMaterial: ABS Speed:3000-20000 AdjustablePower: 100-240V 50-60HzCharging: USBColor: Black / White / BlueSize: 16x2.4cm/6.3x0.94in note:Please allow +/- 1-3cm error due to manual measurement,Thanks for your understanding.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.