... ,4-jaw independent chucks,power chucks,combination chucks, etc.1 ) Two-jaw self-centring chuck is of separate clutches and comes ... suitable for processing various special chaped work pieces, such as tube, rectangular section accessoriies and so on.2 ) Users may change ... . All kinds of jaws can be provided, the jaws are two-piece ones and the top jaws aresoft ones.3. Flimsy parts ...