Or, in an embodiment in which the element holes are formed through a solid bar, threaded holes might be formed in {HEAD ~ the bar} in {TAIL ~ some embodiments} 
in
Or , in an embodiment in which the element holes are formed through a solid bar , threaded holes might be formed in { HEAD ~ the bar } in { TAIL ~ some embodiments }
OTH OTH OTH OTH 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