The inside surface of the replaceable cutter shell {HEAD ~ 49 mates} with {TAIL ~ the surface} on the rolling cutter shell 48 
with
The inside surface of the replaceable cutter shell { HEAD ~ 49 mates } with { TAIL ~ the surface } on the rolling cutter shell 48
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH