{HEAD ~ The replaceable cutter shell} 49 will be locked on {TAIL ~ rolling cutter shell} 48 until replacement is required at the end of the cutting structures service life 
{ HEAD ~ The replaceable cutter shell } 49 will be locked on { TAIL ~ rolling cutter shell } 48 until replacement is required at the end of the cutting structures service life
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH