carbide nail drill bits are made of strong Carbide Tungsten Steel hardest material next to diamond. 3/32 Inch Shank is universal size for most electric nail efile drill machines. This Large Dome Top Barrel shape nail drill bit is professional designed for nail Shaping and Cutting, Grinding, Sanding, Polishing,Shorten. Cuticle and nail side wall cleaning. Safety nail art tool for both nail enthusiast and technicians. Carbide Nail Drill Bit: Shank Size: 3/32 inch. Design: Large long barrel. Color: Silver. Grit: Coarse. Barrel Dip Powder Nail Drill Bit: This professional nail bit is made of strong tungsten steel material, high strength and hard wearing, durable, sharp with excellent heat dissipation and little vibration,less dust, and crafted delicately. This bit won't overheat during long time use. Hard Gel Remover Nail Drill Bit: This nail drill bit with universal 3/32" tungsten steel shank suits most professional electric nail drills. This nail art tool with flat at the top can be used for both acrylic and natural nails, shaping, cutting, grinding, Sanding, polishing,Shorten,removing dead skin and tough calluses. Safety nail art tool for both nail beginners and technicians. Fast & Quickly: Takes off nail hard gel polish, dip powder, acrylic layers and nail art works quickly and safety,smooth top to avoid cuts skins,no hurt to natural nails to shape, contour, polish and removing gel nails, . Saving your time and money in salon and during journey. Easy to Clean & Safe for Nails:This nail drill bit is designed to nail surface work and cleaning.The smooth surface is easy to be cleaned with water after each use.Important to keep your or your client's nails healthy.