The drilling/reaming tool 1 wherein {HEAD ~ the reamer flutes} are wound in {TAIL ~ the opposite direction} to the main flute 
are wound in
The drilling / reaming tool 1 wherein { HEAD ~ the reamer flutes } are wound in { TAIL ~ the opposite direction } to the main flute
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH