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