In {HEAD ~ one embodiment the grip portion} of {TAIL ~ the tack} is a cross bar, at the proximal end of the shaft, which fits into an open sided slot at the forward end of the applicator 
In { HEAD ~ one embodiment the grip portion } of { TAIL ~ the tack } is a cross bar , at the proximal end of the shaft , which fits into an open sided slot at the forward end of the applicator
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH