Description: High efficiency, high-quality finish, long service life, good economic returns Easy to use, safe and reliable, can reduce labor intensity Mechanical parts chamfering, rounding and groove processing Dual Chamber is crossover lines, not easy to block the lines,suitable for the object of relatively low density material Processing is high quality and smoothness and can be all sorts of high-precision shape Specification: Material: Carbide Shank Diameter: approx. 3mm / ( 0.12 Inch ) Drill Bit diameter: approx. 6mm / ( 1/4'' ) Total Quantity: 10 Pieces Package Includes: 10 Pieces Tungsten Carbide Burrs Note: Carbide rotary file in the use of pneumatic or power tools, the speed is generally 6000-40000 revolutions per minute,you must clamp the tool
