Highest Precision Standards: Made of hard metal with tungsten carbide, these nail art tools have the optimum strength, sharpness, durability, and the vibration-with a powerful cutting ability and free filing consistency you need, all while producing minimum friction which causes heat. To protect from overheating damage with heat resistance. Professional Quality: Sharpe and easy to use - cut your time in a half. With minimal filing needed to get the job done faster. It also causes less dust than diamond. You can use it for backfilling, cutting out trenches, doing surface work, cleaning the cuticles and sidewall. Universal Size: 3/32" shank, suitable for most electric or rechargeable manicure nail file machines. Function - It is ideal for nail beautify, nail polishing, nail clear and care, peeling, etc., suitable for the manicure, pedicure use, etc. You can sharpen, grind, neaten, carve, smoothen, polish, and reshape gel and acrylic nails, and remove the gel nail or dead skin.