1. Adjustable Speed & Easy to Use: The speed control knob lets you easily adjust the speed, making this electric nail drill simple and safe for polishing nails. Just plug in the power cord and you're ready to go! The pen is small, easy to handle, and portable. 2. Bring the Salon Home: Enjoy the convenience of interchangeable heads that allow you to file, polish, shine, and shape your nails as easily as a professional manicure! 3. Beautiful Nails Made Easy: Whether you're a professional or not, this fantastic manicure and pedicure set is ergonomically designed for comfortable use on both fingernails and toenails. 4. High Quality: This nail art drill set is made of stainless steel and diamond, which extends its lifespan and makes it easy to store. High-quality diamond grinding heads provide superior results. 5. Suitable for Most Nail Drills: The grinding head is compatible with most electric nail drills.