Perfect set: 10 different styles of metal burs, conical burs, V-shaped burs, cylindrical burs, etc. The total length is 42-51mm and the shank diameter is 3mm, which can meet your different needs. High-quality materials: The cutter is made of high-quality tungsten steel, with high hardness , high temperature resistance and corrosion resistance, fine workmanship, sharp enough, improved polishing efficiency and durability.Application: The metal cutter is short and precise, and it is easier to control during processing. It is universally used for rotary tools with a diameter of 3 mm. It is compatible with most equipment and can be used flexibly. Easy storage: 10 pieces metal burrs for milling machines are packed in a transparent storage box, which can be easily taken out of the box and put back for easy use. Wide range of applications: the burrs are suitable for machining, grinding, engraving and polishing. It can be used for metal materials such as cast iron, bearing steel, high carbon steel, chrome-nickel, bronze, brass, etc. It is also suitable for non-metallic materials such as wood and plastic, ceramic tile, marble, jade, etc.