A drilling tool having an exchangeable insert , the drilling tool comprising a shank , a clamping end , a drill head and a longitudinal axis , wherein a receptacle for the exchangeable insert is formed on the drill head , wherein the receptacle comprises two drivers , wherein a support surface is formed on each driver , wherein the normal vectors of the support surfaces are orthogonal to the longitudinal axis , wherein the drivers are arranged centrally symmetrically with respect to the longitudinal axis , wherein a centering surface is formed adjacent to the support surface of a driver , wherein a centering surface is formed adjacent to the support surface of a driver , wherein the centering surface forms an angle (alpha) of between 120° and 60° with the support surface , wherein a fitting surface is formed adjacent to the centering surface , wherein a base surface is formed between the drivers at the transition between the drill head and the drivers , and wherein the base surface is rotationally symmetrical with respect to the longitudinal axis , wherein the drill head has securing means for securing the exchangeable insert against falling out, wherein the exchangeable insert comprises a front portion, a prismatic fastening portion and a longitudinal axis, wherein the front portion has one or more cutting edges, and wherein the fastening portion is designed such that it cooperates in a form-fitting manner with the drivers of the drilling tool , characterized in that the securing means comprise a transverse bore formed as a stepped bore in the drill head , in that the transverse bore passes through both drivers , in that the transverse bore has an internal thread in a driver (l7), and in that at one end of the fastening portion a recess is formed which is aligned with the transverse bore of the drilling tool . wherein a receptacle for the exchangeable insert is formed on the drill head , wherein the receptacle comprises two drivers , wherein a support surface is formed on each driver , wherein the normal vectors of the support surfaces are orthogonal to the longitudinal axis , wherein the drivers are arranged centrally symmetrically with respect to the longitudinal axis , wherein a centering surface is formed adjacent to the support surface of a driver , wherein a centering surface is formed adjacent to the support surface of a driver , wherein the centering surface forms an angle (alpha) of between 120° and 60° with the support surface , wherein a fitting surface is formed adjacent to the centering surface , wherein a base surface is formed between the drivers at the transition between the drill head and the drivers , and wherein the base surface is rotationally symmetrical with respect to the longitudinal axis , wherein the drill head has securing means for securing the exchangeable insert against falling out, wherein the exchangeable insert comprises a front portion, a prismatic fastening portion and a longitudinal axis, wherein the front portion has one or more cutting edges, and wherein the fastening portion is designed such that it cooperates in a form-fitting manner with the drivers of the drilling tool , characterized in that the securing means comprise a transverse bore formed as a stepped bore in the drill head , in that the transverse bore passes through both drivers , in that the transverse bore has an internal thread in a driver (l7), and in that at one end of the fastening portion a recess is formed which is aligned with the transverse bore of the drilling tool . <EOS>