Function: 1. Excellent heat dissipation and designed for long-term use. High-quality accessories with a well-thought-out design. 2. Polishing handle operates quietly and smoothly with minimal vibration. The handle can be locked or unlocked for safer operation and improved efficiency. 3. Do not adjust the polishing head lock on the handle during operation. Avoid covering the ventilation holes while in use. 4. Rotational speed is adjustable from 0 to 35,000 rpm, with forward and reverse rotation for fast, precise performance, ideal for professional nail care. 5. Ergonomic handle provides a comfortable grip, easy handling, and durable construction. The nail drill bit can be quickly replaced without tools. Specification: Item Type: Nail Drill Handle Material: Stainless aluminum Speed: 35,000 rpm Size: 14 x 2.3 cm / 5.5 x 0.9 inches Package List: 1 x Nail Drill Handle Note: 1. Connect to the nail drill machine. 2. The drill bit can be inserted or removed by turning the handle knob.