Features on the blade cooperate with {TAIL ~ features} on the collection chamber to secure {HEAD ~ the blade} to the collection chamber 
Features on the blade cooperate with { TAIL ~ features } on the collection chamber to secure { HEAD ~ the blade } to the collection chamber
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH