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