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