Features 1、Grinding Bits: The surface roughness of the drill varies from top to bottom, which can quickly remove nail glue for cleaning, shaping, cutting, smoothing and removal, to meet your various needs. 2、Good Material: Made of ceramic, reliable strength, high durability, low cutting performance, less dust, can quickly and well reshape, polish, smooth, polish, sculpt and smooth gel nails. 3、Simple in Use: The drill bit can be rotated to the right or left for smooth CW and CCW works, ideal for left and right hands, no need to change other size during the job. 4、Various Types: You will get 7 styles of nail drills that fit most drills, nail machines, most gel nails and experienced manicurists or beginners. 5、Safe for Nail: Good in heat dissipation, the nail grinder bit is very safe for your nail, and the after cleaning is also very simple with water. Specification Item Type: Nail Grinder Bit Product Material: Ceramic, aluminum alloy, tungsten carbide. Product Size: Approx. 37 x 2.2mm / 1.46 x 0.09in, 37.5 x 2mm / 1.48 x 0.08in, 39 x 6.5mm / 1.54 x 0.26in, 39.5 x 7mm / 1.56 x 0.28in, 48 x 6mm / 1.89 x 0.24in, 50 x 7mm / 1.97 x 0.28in Product Color: White Package List 7 x Nail Grinder Bit