{HEAD ~ The cutting edges} of {TAIL ~ the burnishing section} are configured with an orientation opposite to that of the cutting edges of the reaming section 
of
{ HEAD ~ The cutting edges } of { TAIL ~ the burnishing section } are configured with an orientation opposite to that of the cutting edges of the reaming section
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH