The eccentric ring and shaft are encapsulated by the ball, {HEAD ~ the ball material} passing through and around {TAIL ~ the eccentric ring} and shaft 
passing around
The eccentric ring and shaft are encapsulated by the ball , { HEAD ~ the ball material } passing through and around { TAIL ~ the eccentric ring } and shaft
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH