The cap 44 includes {HEAD ~ a curved top portion} 48 and a frustoconical wall portion 50 which terminates in an opening 52 centered on {TAIL ~ the axis} 41 
The cap 44 includes { HEAD ~ a curved top portion } 48 and a frustoconical wall portion 50 which terminates in an opening 52 centered on { TAIL ~ the axis } 41
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH