A blade means has a blade received therein, the blade slidably engaged in {HEAD ~ the passage way} of {TAIL ~ the head portion} 
of
A blade means has a blade received therein , the blade slidably engaged in { HEAD ~ the passage way } of { TAIL ~ the head portion }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL