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