Functionality: 1. Good heat dissipation effect and can be used for a long time. High quality accessories, with good structure. 2. The grinding handle is very quiet and smooth, with slight vibration, and the chuck handle can be locked / unlocked, safer operation, high efficiency. 3. Do not move the handpiece polishing head locking latch during operation; Do not cover the handpiece ventilation during use. 4. Rotation speed is adjustable from 0-35000rpm, support forward/reverse direction, super fast; Give you an efficient manicure experience. 5. Ergonomic handle design, comfortable to hold, easy to operate, sturdy and durable. You can easily replace the bit without tools. How to use: 1. Connect to nail drill host. 2. The bit can be installed and removed by turning the knob on the handle. Specification: Condition: 100% brand new. Item Type: Nail Drill Handle Material: Aluminum Alloy. Speed: 35,000 rpm Size: approx. 14 x 2.3cm / 5.5 x 0.9inch List of packages: 1 x Nail Drill Handpiece Note: 1. Please allow slight error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real item. Please take the real one as the standard.