Step drill

A step drill comprising:

• a distal end and an opposite proximal end;
• a drill tip having a tip at the distal end of the step drill and including a first number of first geometrically defined cutters, each of the first geometrically defined cutters paired with a corresponding first flute and lying on an imaginary first circular line about a longitudinal axis of the step drill, the imaginary first circular line having a first radius;
• and
• at least one drill step arranged at a distance from the distal end and having an end face with a second number of second geometrically defined cutters, each of the second geometrically defined cutters paired with a corresponding second flute and lying on an imaginary second circular line that runs about the longitudinal axis of the step drill and has a second radius, wherein the first radius is smaller than the second radius,
• wherein the first flutes of the drill tip and the second flutes of the drill step merge in a region which is arranged at a greater distance from the distal end than the end face of the drill step, and form a single flute, the second flutes being helically arranged around the longitudinal axis and, in a cross-sectional view, having an at least partially round profile,
• wherein a second flute core of the second flutes of the drill step tapers, such that the second flute core, proceeding from the end face of the drill step in a direction of a proximal end of the step drill, becomes smaller, and
• wherein, at an end of the first flutes facing away from the distal end, a first flute core diameter of the first flutes of the drill tip approximates a second flute core diameter of the second flutes associated with the drill step, such that the first flutes and the second flutes merge.