Perfect set: 10 different styles of metal knives, conical knives, V-shaped knives, cylindrical knives, etc. The shank diameter is 3mm, which can meet your different needs. High-quality material: The milling cutter is made of high-quality tungsten steel, which has high hardness, resistance to high temperature and corrosion, fine workmanship and is sharp enough, which improves the efficiency and durability of polishing. Application: Metal cutters are short and precise, making them makes it easier to control during machining. Commonly used for rotary tools with a diameter of 3mm. Compatible with most devices and flexible to use. Easy to store: 10 metal cutters for milling machine are packed in a transparent storage box, which can be easily removed from the box and put back for convenient use. Wide range of applications: the cutters are suitable for machining , grinding, engraving and polishing. Can be used for cast iron, bearing steel, high carbon steel, chrome-nickel, bronze, brass and other metal materials. It is also suitable for wood and non-metallic materials such as plastic, ceramic tiles, marble and jade.