PC120B Pencil-shape and Lightweight Designs: It works with all kinds of 3/32” shank bits. It is only designed for the MelodySusie Sheen nail drill and will not be suitable for other drills. (Note: The packge only include one handpiece) | Low Noise and Low Heat: This electro file is with a powerful yet quiet motor. Also, the smart heat dissipation can avoid overheating efficiently. (no more than 20 minutes of continuous use each time is recommended) | Low Vibration: Do your nail smoothly and enjoy the feeling of low vibration. It will not let your hand be numb after long-term use. | Portable and Light: Compact and lightweight design make it easy to carry and portable to bring it out, you can so your nail art work anytime anywhere. | Material: The body of the nail drill is the aluminum alloy, which can contribute to heat dissipation and long-time working.