1.          Hard jaws are adopted for square for square or octagonal thin tube work pieces after being unisotropic machined.

2.          Soft jaws could grip rectangular work piece after being unisotropic machined.

3.          The specification is the same as SK type.

4.          The body is made of MEEHANITE. it is suitably used for high speed revolution and 3 times more durable than regular chucks.