The body member can be removed by rotating the body member and withdrawing it by a pulling action whereby {HEAD ~ the engageable member} slides in and out of {TAIL ~ the second channel} 
The body member can be removed by rotating the body member and withdrawing it by a pulling action whereby { HEAD ~ the engageable member } slides in and out of { TAIL ~ the second channel }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL