1. Good heat dissipation effect and can be used for a long time. High‑quality accessories, with good structure. 2. The polishing handle very quiet and smooth, with slight vibration, and the chuck handle can be locked/unlocked, safer operation, high efficency. 3. Do not move the polishing head lock catch of the handpiece during operation; do not cover the vent on the handpiece during use. 4. Rotating speed is adjustable in 0‑35000rpm, support forward/reverse direction, super fast; birng you effective manicure experience. 5. Ergonomic handle design, comfortable to hold, easy to use, sturdy and durable.You can easily replace nail drill bit without tools. Specification: Condition: 100% Brand New Item Type: Nail Drill Handle Material: Aluminum Alloy Speed: 35000rpm Size: Approx. 14 x 2.3cm / 5.5 x 0.9in Package List: 1 x Nail Drill Handpiece