{TAIL ~ The drive element} engages the top of {HEAD ~ the foremost fastener} of the strip of fasteners to force the fastener into a work piece 
{ TAIL ~ The drive element } engages the top of { HEAD ~ the foremost fastener } of the strip of fasteners to force the fastener into a work piece
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH