Thus, {HEAD ~ the mandrel} 305 must be removable from the turret 301 which it is to effect changes in the size of {TAIL ~ the mandrel cross section/shape} as discussed below 
Thus , { HEAD ~ the mandrel } 305 must be removable from the turret 301 which it is to effect changes in the size of { TAIL ~ the mandrel cross section / shape } as discussed below
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH