Function: 1. Efficient heat dissipation for long-term use. High-quality accessories with a well-designed structure. 2. Polishing handle operates quietly and smoothly with minimal vibration. Handle can be locked or unlocked for safer operation and high efficiency. 3. Do not adjust the polishing head lock during operation; avoid covering the ventilation holes on the handle while in use. 4. Adjustable rotational speed from 0 to 35,000 rpm, supports forward and reverse rotation for fast performance, ideal for nail care applications. 5. Ergonomic handle design provides comfort and ease of use. Durable construction allows tool-free replacement of nail drill bits. Product Name: Electric Drill Holder for Nail Milling Machine Specification: Item Type: Nail Drill Holder Material: Stainless aluminium 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 host device. 2. Insert and remove drill bits by turning the handle knob.