The ends of {TAIL ~ the pin} are supported by {HEAD ~ the casings} through the snap rings 
The ends of { TAIL ~ the pin } are supported by { HEAD ~ the casings } through the snap rings
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH