{TAIL ~ The cross sectional area} of {HEAD ~ the head} 16 is slightly larger than that of the shank 14 
{ TAIL ~ The cross sectional area } of { HEAD ~ the head } 16 is slightly larger than that of the shank 14
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH