{TAIL ~ A rotary drilling tool} has a plurality of cutters mounted on the tool body and formed with cutting edges defining {HEAD ~ a cutting profile} 
{ TAIL ~ A rotary drilling tool } has a plurality of cutters mounted on the tool body and formed with cutting edges defining { HEAD ~ a cutting profile }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD