A piston rod 41 of {HEAD ~ the arrangement} 40 is connected to the sleeve 31 via {TAIL ~ a ball joint} 42 
A piston rod 41 of { HEAD ~ the arrangement } 40 is connected to the sleeve 31 via { TAIL ~ a ball joint } 42
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH