The reaming cutting edges adjoin {HEAD ~ the at least one major cutting edge} directly in {TAIL ~ the longitudinal direction} 
The reaming cutting edges adjoin { HEAD ~ the at least one major cutting edge } directly in { TAIL ~ the longitudinal direction }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL