Rotary tool having exchangeable cutting inserts and tool main-body set for a rotary tool

A rotary tool for a machining of workpieces comprising

• a tool main body comprising:
• a clamping section;
• a tool head;
• an exchangeable first cutting insert having at least one first cutting region having a first cutting edge, wherein the first cutting insert can be inserted from a front side of the tool head into an insert groove of the tool main body and can be fastened therein in a rotationally fixed manner;
• and
• an exchangeable second cutting insert as reaming blade insert which is fastened on the tool head in an offset position with respect to the first cutting insert in an axial direction of the rotary tool in a direction of the clamping, the second cutting insert comprising an insert main body and at least one second cutting region having a second cutting edge, the second cutting insert can be fixed via a central position with respect to a tool head cross-section from the front side of the tool head, a fastening means for the second cutting insert is arranged in the insert groove and is accessible from the front side and that the fastening means is configured to be longer than a diameter of the insert main body, wherein the fastening means has a thread for screwing to the tool main body in at least one region outside the insert main body in the installed state in the insert main body.