Weight: Opp package weighing about 132G Product size: about 15.8*2cm Material: ABS material Frequency: 50-60HZ Color: Random Power supply: USB plug-in Speed: 3000-20000RPM (adjustable) Specifications: Pen-holder body and comfortable grip Portable nail removal takes only 3 minutes, easy to remove all kinds of phototherapy nails, crystal nails, and nails. The removal speed is fast Adjustable speed for efficient grinding High speed, replaceable grinding head, adjustable speed Easy nail removal / nail face cleaning and repair / exfoliation Operation steps for replacing the grinding head Easy and convenient one unplug one plug two steps to complete the replacement Detailed steps: 01.Hold down the middle button and gently rotate the machine head to open the bayonet. 02. Insert the grinding head vertically, then press the button and turn it tightly in the opposite direction Package Include: English manual*1, grinding machine*1, USB cable*1, grinding head*6