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