The jack may conveniently be actuated by {HEAD ~ a releasable telescopic or non telescopic handle} , engageable in {TAIL ~ a socket}  
engageable in
The jack may conveniently be actuated by { HEAD ~ a releasable telescopic or non telescopic handle } , engageable in { TAIL ~ a socket }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH