Nature Nail Buffer Nail Drill Bit | Color: Silver | Grit: Extra Fine - XF | Shank Size: 3/32'' | Two Way Rotate Nature Nail Buffer Nail Drill Bit: Special design for nature nail bed file, increased adhesion to the nail tips and nail bed, make the nail tips application more easily. 0.04mm(0.00157inch) depth of teeth ensures the safety of polishing will not do harm to your natural nail bed. Also, it works well for cuticle area cleaning and gel polish adjustment. Professional Carbide Nail Drill Bit: Made of premium strength tungsten carbide material, this high precision machining nail bit comes with excellent heat dissipation, low vibration, low noise, and hard-wearing features.