{TAIL ~ A portion} 46 of sleeve 41 has a length L substantially equal to the distance between shoulder 33 and the nearest edge of {HEAD ~ plastic bead} 38 
{ TAIL ~ A portion } 46 of sleeve 41 has a length L substantially equal to the distance between shoulder 33 and the nearest edge of { HEAD ~ plastic bead } 38
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH