The devices have a body with a button member extending into the body and having protrusions locking therein using {HEAD ~ a form} of {TAIL ~ bayonet lock} 
The devices have a body with a button member extending into the body and having protrusions locking therein using { HEAD ~ a form } of { TAIL ~ bayonet lock }
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 REL TAIL TAIL TAIL TAIL TAIL TAIL