{HEAD ~ A shoulder} 53 of the replaceable cutter opposes {TAIL ~ the shoulder} 52 on rolling cutter shell 48 
{ HEAD ~ A shoulder } 53 of the replaceable cutter opposes { TAIL ~ the shoulder } 52 on rolling cutter shell 48
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH