Abstract: A wood-drilling device includes at least one drill shank, at least one drill tip, and at least one cutting body. The cutting body has at least one cutting wing, wherein at least one of the cutting wings has a cutting surface, which is arranged on a base side facing towards the drill tip. The cutting surface is formed by at least two mutually adjoining cutting partial surfaces which are angled away from a drill plane, oriented perpendicular to the rotation axis, in the direction of the drill shank and which are angled to each other at an angle and each have an angle to the rotation axis different from 0°.

Abstract: A wood drill includes a clamping portion for connecting, for conjoint rotation, to a tool fitting of a portable power tool, and a head portion which is provided with a centering geometry. The clamping portion is formed at a first end, remote from a workpiece, and the head portion is formed at a second end, close to a workpiece, of the wood drill. The clamping portion is connected to the head portion via a shank portion. A maximum outside radius of the head portion is greater than a maximum outside radius of the shank portion. The head portion has at least one main lip with at least two stages for introducing a bore with a predefined inside radius into a workpiece. An outside radius of a main lip base is less than 60%, preferably less than 50%, of an outside radius of the head portion.