locking {HEAD ~ means} for securely locking said replaceable cutter shell to said rolling cutter shell by drawing said annular tapered inner surface of said replaceable cutter shell onto said tapered annular external surface of said rolling cutter shell thereby inducing a preload into said annular tapered inner surface of said replaceable cutter shell and said tapered annular external surface of {TAIL ~ said rolling cutter shell} 
locking { HEAD ~ means } for securely locking said replaceable cutter shell to said rolling cutter shell by drawing said annular tapered inner surface of said replaceable cutter shell onto said tapered annular external surface of said rolling cutter shell thereby inducing a preload into said annular tapered inner surface of said replaceable cutter shell and said tapered annular external surface of { TAIL ~ said rolling cutter shell }
OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL