Housing 2 includes {HEAD ~ a central key way} 4 disposed along {TAIL ~ axis} 3 for receiving a key 5 in the conventional manner to permit rotation of cylinder 1 
Housing 2 includes { HEAD ~ a central key way } 4 disposed along { TAIL ~ axis } 3 for receiving a key 5 in the conventional manner to permit rotation of cylinder 1
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH