{TAIL ~ The opposite side} of that same material and the other metal plate mutually cooperate to provide {HEAD ~ complementary centering means} 
{ TAIL ~ The opposite side } of that same material and the other metal plate mutually cooperate to provide { HEAD ~ complementary centering means }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD