Patent ID: 8292555

Claim:
An elongate cylindrical drill body having a retainer shank on one end and a drill point on the other end and comprising: a. At least two longitudinally extending flutes oppositely formed in the drill body and extending spirally along said drill body away from the retaining shank and through said drill point end; b. Each flute when intersecting said drill point end forming a radially outward extending cutting edge with an adjacent chip guide surface; c. Said radially extending cutting edges having a curved radially innermost cutting edge formed by a chip gash joining each flute with said cutting point end; d. Said radially innermost part of said cutting edges and said gash configured to present a positive cutting rake angle to the material to be removed; and e. The radially innermost cutting edges formed by the intersection of the gashes being symmetrical with one another about a point offset from the centerline of the drill body so as to allow a positive cutting rake action at the contact point of the material to be removed.