Good price , high quality.
Sleeve 40cr steel high-precision heat treatment process;
To achieve national torque standard.
1.Four riveted structure work end torque tough after heat treatment.
2.With the handle front sliding groove so that the activities of the working end of the freely.
3.Inside the working end to pull teeth process, increase the locking force is not easy to slip.
4.Aperture can be adjusted freely, easy to use.
