Drill comprising front and rear ends (1, 2), between which there extends a centre axis with which a peripheral envelope surface is concentric, and the front one of which is formed as a tip having an obtuse nose angle (ε), as well as two chip flutes countersunk in the peripheral envelope surface, which flutes are situated between a pair of bars and run helicoidally at a certain pitch angle (φ) around a central core, and individually are delimited by a chute-shaped flute wall situated between a pair of parallel border edges (17, 18), a first one of which is leading in the direction of rotation of the drill on its bar and the second one trailing on its bar, wherein: a) between the individual chip flute and a clearance surface included in the tip, there is formed a cutting edge that extends from the centre axis to the periphery and has a shape that is dependent upon the cross-sectional shape of the flute wall as well as upon the nose angle (ε), b) the flute wall includes, on one hand, a frontal surface that is situated closest to the first border edge and extends axially rearward from a main edge included in the cutting edge, and on the other hand a trailing surface situated closest to the second border edge, which trailing surface transforms into the frontal surface via a concavely arched bottom surface and extends rearward from a web thinning formed in the tip and located adjacent to a centre cutting edge, which transforms into the main edge via a knee and is shorter than the same, c) a radial angle (δ) between the frontal surface and a radial reference line between the centre axis and the first border edge is positive so far that the frontal surface is situated rotationally behind the reference line, and d) the individual chip flute has an opening angle (α) - counted as the angle between the first reference line and a second reference line between the centre axis and the second border edge - with which an angle of divergence (β) of the individual bar forms the supplementary angle, e) the core has a diameter that amounts to at most 22 % of the drill diameter, and f) the angle of divergence (β) of the bar is greater than the opening angle (α) of the chip flute, characterized in g) that the frontal and trailing surfaces (19, 20) of the individual flute wall are delimited from the bottom surface via imaginary, helicoidal boundary lines (22, 23), and have radii of curvature (r 1, r 2) - as viewed in a plane perpendicular to the centre axis - that are at least three times greater than the radius (r 3) of the bottom surface, and further characterised by h) a first boundary line, positioned closest to the first border edge, meeting the main edge at a point that divides the same into two edge segments (13a, 13b), the one of which positioned closest to the centre cutting edge has the smallest radius of curvature and imparts a J-like shape to the main edge. a) between the individual chip flute and a clearance surface included in the tip, there is formed a cutting edge that extends from the centre axis to the periphery and has a shape that is dependent upon the cross-sectional shape of the flute wall as well as upon the nose angle (ε), b) the flute wall includes, on one hand, a frontal surface that is situated closest to the first border edge and extends axially rearward from a main edge included in the cutting edge, and on the other hand a trailing surface situated closest to the second border edge, which trailing surface transforms into the frontal surface via a concavely arched bottom surface and extends rearward from a web thinning formed in the tip and located adjacent to a centre cutting edge, which transforms into the main edge via a knee and is shorter than the same, c) a radial angle (δ) between the frontal surface and a radial reference line between the centre axis and the first border edge is positive so far that the frontal surface is situated rotationally behind the reference line, and d) the individual chip flute has an opening angle (α) - counted as the angle between the first reference line and a second reference line between the centre axis and the second border edge - with which an angle of divergence (β) of the individual bar forms the supplementary angle, e) the core has a diameter that amounts to at most 22 % of the drill diameter, and f) the angle of divergence (β) of the bar is greater than the opening angle (α) of the chip flute, characterized in g) that the frontal and trailing surfaces (19, 20) of the individual flute wall are delimited from the bottom surface via imaginary, helicoidal boundary lines (22, 23), and have radii of curvature (r 1, r 2) - as viewed in a plane perpendicular to the centre axis - that are at least three times greater than the radius (r 3) of the bottom surface, and further characterised by h) a first boundary line, positioned closest to the first border edge, meeting the main edge at a point that divides the same into two edge segments (13a, 13b), the one of which positioned closest to the centre cutting edge has the smallest radius of curvature and imparts a J-like shape to the main edge.