Drill bit

A drill bit for drilling a hole in a metal workpiece which comprises a body having a shank portion and an end face at its forward end and an axis of rotation therethrough, said body having at its forward end a pair of cutting means each having at least one cutting edge, said cutting edges being disposed symmetrically relative to said axis of rotation of said drill bit, an inner portion of each cutting edge remote from the outer periphery of said bit body being generally convex when viewed from the forward end of said bit body, at least a part of the innermost sections of said inner portions of said cutting edges being equally spaced from said axis of rotation a distance between 0.1 to 1.25 mm to thereby define a recess having opposed walls between said cutting means, the depth of said recess being not less than 0.2 mm whereby a central core formed in said recess during a drilling operation will be twisted off by the opposed walls of said recess prior to the core engaging the base of the recess, and the opposed walls of said recess extending parallel to said axis of rotation.