A mixer for mixing together at least two components comprising: - a mixer housing having a longitudinal axis, an upstream end and a downstream end, - a mixing element arranged at least partly within the mixer housing; - a mixer inlet section having at least two inlets provided at an input side and at least two outlets provided at an output side, wherein each of the at least two inlets is in fluid communication with one of the at least two outlets and wherein the outlets are in fluid communication with the mixing element, - wherein the inlets are adapted to be sealingly connected to corresponding exit openings of a cartridge comprising the at least two components, - wherein the mixer housing comprises connection means for connecting the mixer to the cartridge by a rotational movement around the longitudinal axis, - wherein the mixer housing comprises a mixing tube and a connection section, the mixing tube containing the mixing element and the connection section comprising the connection means, characterized in that engagement means are provided at an outer surface of the mixer housing which are accessible from the outside when the mixer is connected to the cartridge, the engagement means comprising an engagement surface being spaced apart from the upstream end of the mixer housing in the direction of the longitudinal axis, the engagement surface pointing in the direction of the upstream end of the mixer housing thereby forming an undercut by means of which high axial forces in the downstream direction can be transferred to the mixer housing, the engagement means being provided on the connection section and being arranged in a downstream half of the connection section. - a mixer housing having a longitudinal axis, an upstream end and a downstream end, - a mixing element arranged at least partly within the mixer housing; - a mixer inlet section having at least two inlets provided at an input side and at least two outlets provided at an output side, wherein each of the at least two inlets is in fluid communication with one of the at least two outlets and wherein the outlets are in fluid communication with the mixing element, - wherein the inlets are adapted to be sealingly connected to corresponding exit openings of a cartridge comprising the at least two components, - wherein the mixer housing comprises connection means for connecting the mixer to the cartridge by a rotational movement around the longitudinal axis, - wherein the mixer housing comprises a mixing tube and a connection section, the mixing tube containing the mixing element and the connection section comprising the connection means, characterized in that engagement means are provided at an outer surface of the mixer housing which are accessible from the outside when the mixer is connected to the cartridge, the engagement means comprising an engagement surface being spaced apart from the upstream end of the mixer housing in the direction of the longitudinal axis, the engagement surface pointing in the direction of the upstream end of the mixer housing thereby forming an undercut by means of which high axial forces in the downstream direction can be transferred to the mixer housing, the engagement means being provided on the connection section and being arranged in a downstream half of the connection section.