This is a simple MC 2x2 and it has a extra seat input used for like docking seat and pilot seat because yea a hydrogen rocket engines does not have a Y only a X and Z and this has a active or off for seat 2 that you can set axis 2 on for the engine and off for the RCS and by axis 1 on for rolling by RCS and off because flywheel. and yea i hope you enjoy this Item.
