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