A milling tool for chip removing machining comprising a kit comprising a tool body and at least one cassette for the milling tool for chip removing machining, wherein the tool body comprises: - a front end and a rear end, between which a central axis of rotation and a peripheral envelope surface extend, - at least two identical insert seats formed in a transition between the front end and the peripheral envelope surface, wherein each insert seat is configured to support a cutting insert adapted to be mounted therein, a bottom contact surface and at least one side contact surface (9a, 9b) being provided in each insert seat for supporting a bottom support surface and at least one side support surface (109a, 109b) of the cutting insert, respectively; and wherein the cassette comprises: - an upper side, - a lower side comprising a bottom support surface, - a peripheral side surface extending between the upper side and the lower side, wherein the peripheral side surface comprises at least one side support surface (209a, 209b), and - at least one insert seat (204, 205, 206) configured to support a secondary cutting insert (300, 400, 500), the insert seat (204, 205, 206) of the cassette being formed in a transition between the upper side and the peripheral side surface, wherein the milling tool comprises a primary cutting insert comprising a cutting edge and being configured to be mounted in one of the identical insert seats of the tool body, wherein the primary cutting insert has a bottom support surface configured to be supported by the bottom contact surface of the insert seat and at least one side support surface (109a, 109b) configured to be supported by the at least one side contact surface (9a, 9b) of the insert seat when the primary cutting insert is mounted therein, and a secondary cutting insert (300, 400, 500) comprising a cutting edge (304, 404, 504) and being configured to be mounted in the at least one insert seat (204, 205, 206) of the cassette, characterized in that the at least one side support surface (209a, 209b) and the bottom support surface of the cassette are configured to be supported by the at least one side contact surface (9a, 9b) and the bottom contact surface, respectively, of any one of the identical insert seats of the tool body, so that the cassette is configured to be detachably mounted in any one of the identical insert seats of the tool body. - a front end and a rear end, between which a central axis of rotation and a peripheral envelope surface extend, - at least two identical insert seats formed in a transition between the front end and the peripheral envelope surface, wherein each insert seat is configured to support a cutting insert adapted to be mounted therein, a bottom contact surface and at least one side contact surface (9a, 9b) being provided in each insert seat for supporting a bottom support surface and at least one side support surface (109a, 109b) of the cutting insert, respectively; and wherein the cassette comprises: - an upper side, - a lower side comprising a bottom support surface, - a peripheral side surface extending between the upper side and the lower side, wherein the peripheral side surface comprises at least one side support surface (209a, 209b), and - at least one insert seat (204, 205, 206) configured to support a secondary cutting insert (300, 400, 500), the insert seat (204, 205, 206) of the cassette being formed in a transition between the upper side and the peripheral side surface, - an upper side, - a lower side comprising a bottom support surface, - a peripheral side surface extending between the upper side and the lower side, wherein the peripheral side surface comprises at least one side support surface (209a, 209b), and - at least one insert seat (204, 205, 206) configured to support a secondary cutting insert (300, 400, 500), the insert seat (204, 205, 206) of the cassette being formed in a transition between the upper side and the peripheral side surface, wherein the milling tool comprises a primary cutting insert comprising a cutting edge and being configured to be mounted in one of the identical insert seats of the tool body, wherein the primary cutting insert has a bottom support surface configured to be supported by the bottom contact surface of the insert seat and at least one side support surface (109a, 109b) configured to be supported by the at least one side contact surface (9a, 9b) of the insert seat when the primary cutting insert is mounted therein, and a secondary cutting insert (300, 400, 500) comprising a cutting edge (304, 404, 504) and being configured to be mounted in the at least one insert seat (204, 205, 206) of the cassette, characterized in that the at least one side support surface (209a, 209b) and the bottom support surface of the cassette are configured to be supported by the at least one side contact surface (9a, 9b) and the bottom contact surface, respectively, of any one of the identical insert seats of the tool body, so that the cassette is configured to be detachably mounted in any one of the identical insert seats of the tool body.