Quiet & Smooth: The polishing shaft is very quiet and smooth, with slight vibration, and the chuck handle can be locked/unlocked, safer operation, high efficiency. Good heat dissipation effect and can be used for a long time. High-quality accessories, with good texture. Adjustable Speed: Its rotation can be up to 30000R/M to effectively treat both sensitive areas and rough calluses. Perfect for manicures and pedicures, ideal for shaping, polishing, callus removal, etc. Universal Size: Made of high-quality material, pen shape, durable and solid for longer use. Fits most nail drill machines, can be applied to 202 / 278 / 288 model nail machine. Ergonomic handle design, comfortable to hold, easy to use, sturdy and durable. You can easily change the nail drill bit without tools. Easy to Use: Easy to change drill bits, even beginners can choose it. Ergonomic grip handle, comfortable to hold, good for operation. Professional nail drill handle, suitable for professional salon use or home use. Wide Range of Applications: It is commonly used in manicures, pedicures, engraving, filing, shaping, polishing, callus removal, or pet nail beauty and so on. Note: Do not move the polishing head lock on the handle during operation; do not cover the vent on the handle during use.