http://www.dgtouch.com/neck-joint-manequin-ghost/ DGTouch must ensure that the neck is not rotated so that the outer and inner parts are level to a tentatively level bridge. One benefit is that the image can be chronic to ensure a tight, locking connection that supports the neck at the proper neck-pitch angle. Endorse us for any kind of design field and check us out at: http://www.dgtouch.com/