- High quality: nail cutter drill bits are made of high quality tungsten carbide steel material, resistant and durable. - Tungsten carbide nail files: includes 10 different types of tungsten steel nail tips to meet your grinding needs in different regions of the nail. - Manicure tools: various combinations of nail tips to finish and polish natural nails, especially for removing cuticles from edges and sides and dead skin. - Electric nail drill set: 3/32" (2.35 mm) universal shank that fits perfectly with most electric drills on the market. - Nail tip sets are secured in a mini box that you can easily store in your pocket or purse. - Save time and money: electric nail files fit most nail drills, no need to schedule an appointment at the manicure store in advance.