Our electric nail file kit contains 10 different tungsten steel nail bits to meet your sanding needs in different areas of the nail. These bits are made of high-quality tungsten carbide material, making them strong and durable. Additionally, they feature excellent heat dissipation for faster cooling during use. The nail bits included in this set are ideal for finishing and polishing natural nails, as well as removing cuticles, sidewalls, and dead skin. The universal 3/32" (2.35mm) shank fits perfectly with most electric drills on the market. Furthermore, these electric nail files are compatible with most nail drills, making them a convenient choice for professionals and enthusiasts alike.