1.Hardened by quenching, not easy to deform
AT3 standard, the surface is hardened by quenching process. The body is made of 20CrMnTi,
It has high thermal strength, oxygen resistance and good comprehensive mechanical properties,
It is not easy to deform after long-term use to ensure stable accuracy.
2.Exquisite workmanship, sturdy and durable
Exquisite manufacturing process, each product is strictly selected from raw materials through cutting, rough turning and hot spots
It is refined by multiple processes such as processing, carburizing, fine grinding and quality inspection.
3.High concentricity of bilateral keys
Double side key design, it is not easy to swing
