A needle passes through {HEAD ~ the hollow applicator and tack bore} to project from {TAIL ~ the distal end} of the tack shaft 
to project from
A needle passes through { HEAD ~ the hollow applicator and tack bore } to project from { TAIL ~ the distal end } of the tack shaft
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH