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