Abstract: A combination tool including a base body with several reaming blades each having a chamfer and a guide surface, arranged around the circumference of the base body, for reaming a cylinder bore. The combination tool also has at least one grooving blade arranged axially offset from the reaming blades and which may be extended radially relative to the base body. The combination tool is provided with two guide strips, arranged in the base body, at an angle to each other, between two reaming blades which are adjacent in the circumferential direction and displaced axially relative to the above in the direction of the grooving blade.

Abstract: The combination tool comprises a base body (16) with several reaming blades (18), with a chamfer (20) and a guide surface (22), arranged around the circumference of the base body, for reaming a cylinder bore and with at least one grooving blade (26), arranged axially offset from the reaming blades (18) and which may be extended radially relative to the base body (16). According to the invention, the combination tool is provided with two guide strips (30), arranged in the base body, at an angle to each other, between two reaming blades (18) which are adjacent in the circumferential direction and displaced axially relative to the above in the direction of the grooving blade (26).