Enhanced Stability with Rotary Lock Design: The PM180G features a rotary lock system for the nail drill bit, reducing vibration and enhancing stability during use. This design also allows for quick and easy bit replacements, improving both safety and convenience. Lightweight & Portable: Its compact, lightweight design makes it effortless to carry and use wherever you go, allowing you to create nail art anytime, anywhere. Low Noise & Low Vibration: MelodySusie PM180G Nail Drill features a powerful yet quiet motor with smart heat dissipation. It comes with an upgraded motor and overload protection mechanism to extend its lifespan. Additionally, its spring construction makes it quiet and low-vibration for a more enjoyable experience.