{TAIL ~ The conical sections} are either stepped or smooth for different force loadings particularly in the application of different types of {HEAD ~ closures} thereto 
{ TAIL ~ The conical sections } are either stepped or smooth for different force loadings particularly in the application of different types of { HEAD ~ closures } thereto
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH