Salon/Home Tool: Perfect gift for DIY lovers or nail salon. It is best clean and sanitize your carbide bits with water and for a long-lasting use. Multi-Purpose: In a well strength pointed and cutting performance, perfect for gel surface and acrylic nails, also be work on nail file, shaping and cutting nails, grinding, etc. 5 in 1 Nail Drill Bit: The Two-way rotation function designed to make the bits cut smoothly in clockwise and counter-clockwise directions, used for cleaning and prepping, shaping and shortening, cuticle work, under the nail and backfills. Prefessional Nail Drill Bits: The nail drill bits sets are made of superior tungsten carbide material, with excellent heat dissipation for faster cooling during high-speed and long-time rotation, Sharp & Durable. Electric Nail Drill Bit: Color: Purple, Grit: Fine. Universal 3/32"(2.35mm) stainless steel shank perfectly suits for most electric nail drill machine.