Features: 1.Premium Material: Rotary file is made of cemented carbide material, high temperature resistant, high hardness, sturdy and durable. 2.Excellent Performance: Professional manufacturing, exquisite workmanship, not easy to bend or deform, smooth surface, high accuracy. 3.Strict Standards: Built to greatly quality control standards, single cut carbide rotary burr has stable performance and high reliability. 4.Easy Operation: Carbide rotary file can be used with handheld electric or pneumatic tool drive, convenient and practical, save your efforts. 5.Wide Application: Carbide rotary burr has a wide range of application, suitable for surface grinding of aviation, automobile and ship. Specification: Item Type: Carbide Burrs Material: Cemented Carbide Set Includes: M0618M06, M0817M06, M1020M06, M1225M06, M1425M06 The letters represent the international number of this product. The first two digits are the diameter of the tool head, the third and fourth digits are the length of the tool head, and M06 is the diameter of the tool handle (unit is mm). Application: Suitable for surface grinding of aviation, automobile and ship, etc.