The elastomeric material encapsulating the extension arm 11 can be made from a multitude of {HEAD ~ materials}, such as rubber or a metal conduit or {TAIL ~ even a telescoping metal shaft} having a ball and socket at each end 
such as
The elastomeric material encapsulating the extension arm 11 can be made from a multitude of { HEAD ~ materials } , such as rubber or a metal conduit or { TAIL ~ even a telescoping metal shaft } having a ball and socket at each end
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH