WS-Staketen-Bormax 2.0 with replaceable, centering tip or pre-drill, such as two offset grooved main cutting edges as well as the toothed, longitudinally grooved pre-cutter require significantly less feed force and minimize friction and the resulting heat development, the scope of delivery includes a Staketen-Bormax, a suitable centering point, a pilot drill ø 4 mm and an Allen key, hexagonal shank for better power transmission, with pilot drill ideal for drilling at an angle of less than 90° to the surface of the material, as is the case, for example, in stair construction