{TAIL ~ A drill} 5 in which {HEAD ~ the cutting face} of each insert is generally flat but is convexly curved toward the platform adjacent the second corner so as to form the curved portion of the cutting edge 
in
{ TAIL ~ A drill } 5 in which { HEAD ~ the cutting face } of each insert is generally flat but is convexly curved toward the platform adjacent the second corner so as to form the curved portion of the cutting edge
TAIL TAIL TAIL TAIL TAIL TAIL OTH REL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH