A rotating cutting tool includes a single or multi-piece support part having an end face and a circumferential wall, an interchangeable cutting insert provided at or about the end face, and at least one interchangeable guide insert coupled to the support part via a retaining means. The at least one interchangeable guide insert being free of cutting edges and protruding radially relative to the circumferential wall. The at least one interchangeable guide insert including a guide section which protrudes radially furthest outward. The guide section lying axially at the level of the retaining means and offset from the retaining means in the circumferential direction.