The Shape It Up Carbide Milling Bit Narrow Cylinder Round Top Coarse Green is a carbide milling bit and features a narrow cylinder with a round top and a coarse grit. This narrow carbide cylinder is a versatile milling bit; this golden carbide milling bit is suitable for milling the nail product on the nail surface or in the sidewalls, for trimming and perfecting to the desired length and shape. It is also suitable for the skin, for preparing small calluses. The special three-layer gold coating offers very high quality; the coating is wear-resistant, ensures a longer lifespan, and makes the carbide milling bit very robust. This milling bit is for right-handed use only and has a coarse grit. Green indicates a coarse grit and is suitable for removing hard builder gel, BIAB, acrygel, and all types of acrylic. Set your electric nail drill to between 25,000 and 35,000 RPM when using this carbide milling bit. Shape It Up's carbide milling bits are easy to clean with a brass or nylon brush, and you can soak the bit in Klear Sanifiner, Klear 70% Alcohol, or the special hygienic spray Klear Tools and Surfaces to kill viruses and bacteria.