A full set of rig hoisting system need 90days to manufacture ,these rig parts include: hoook ,swivel, travelling block,rotary if you want to find a chinese experience manufacturer ,ples give us a opportunity to cooperate with u ,we do make u 100% satisfied ~! the major part materials are all bought from NOV, only NOV materials can ensure the good quality. SL225-Swivel, Top Quality, Tiger rig part ...