1. The polishing handle very quiet and, with slight vibration, and the chuck handle can be locked/unlocked, operation 2. Do not move the polishing head lock catch of the handpiece during operation; do not cover the vent on the handpiece during use. 3.Ergonomic handle design, comfortable to hold, easy to use, sturdy and . You can easily replace nail drill bit without tools. Color: Silver & White Material: plastic Specifications: 5 PIN Package Contents: 1 x Electric Nail Drill Pen Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.