Two cutting inserts are positioned in exactly opposed diametric positions, and engage the workpiece in a substantially identical manner to precisely balance {HEAD ~ the radial forces} resulting from {TAIL ~ drill} axially advancing though a workpiece 
resulting from
Two cutting inserts are positioned in exactly opposed diametric positions , and engage the workpiece in a substantially identical manner to precisely balance { HEAD ~ the radial forces } resulting from { TAIL ~ drill } axially advancing though a workpiece
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH