{HEAD ~ The tubular body} 122 has an open distal end 124 and an open proximal end 126 provided with an annular flange 128 projecting outward radially from {TAIL ~ the tubular body} 122 
{ HEAD ~ The tubular body } 122 has an open distal end 124 and an open proximal end 126 provided with an annular flange 128 projecting outward radially from { TAIL ~ the tubular body } 122
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH