a tapered wall extending from the bottom end to the top end, said {HEAD ~ tapered wall} having an outer surface and {TAIL ~ an inner surface} 
having
a tapered wall extending from the bottom end to the top end , said { HEAD ~ tapered wall } having an outer surface and { TAIL ~ an inner surface }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL