{TAIL ~ An end} of {HEAD ~ each extension tube} 34 and 36 opposite the hub 32 supports a connector, e.g., luer connector 40 
{ TAIL ~ An end } of { HEAD ~ each extension tube } 34 and 36 opposite the hub 32 supports a connector , e.g. , luer connector 40
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH