Axial movement of {HEAD ~ the pin} beyond a predetermined range is restricted by {TAIL ~ snap rings} fitted on the both ends of the pin 
Axial movement of { HEAD ~ the pin } beyond a predetermined range is restricted by { TAIL ~ snap rings } fitted on the both ends of the pin
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH