The body includes a tapered side wall having {HEAD ~ an inner face} or surface and an outer face or {TAIL ~ surface} 
The body includes a tapered side wall having { HEAD ~ an inner face } or surface and an outer face or { TAIL ~ surface }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL