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