a housing having {TAIL ~ a first dispensing conduit} for dispensing said first component and {HEAD ~ a second dispensing conduit} for dispensing said second component 
a housing having { TAIL ~ a first dispensing conduit } for dispensing said first component and { HEAD ~ a second dispensing conduit } for dispensing said second component
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH