A passage barrier, comprising - a first guide element and - a second guide element, wherein ∘ the first guide element and the second guide element define an interlock region through which people pass from an entrance region into a passage region, - at least one barrier element (6a, 6b) that can prevent and/or enable the passage of a person from the entrance region into the passage region within the interlock region, - a drive, ∘ wherein the drive has a drive unit and ∘ wherein the drive has an output unit, • wherein the drive unit, the output unit and the barrier element (6a, 6b) are operatively connected in such manner that the barrier element (6a, 6b) is movable by means of the drive unit into a position closing the interlock region and into a position releasing the interlock region, wherein - the output unit is designed as a hollow shaft, wherein - the hollow shaft is mounted so as to be rotatable with respect to the guide element (2a, 2b) and - the hollow shaft surrounds the drive unit at least in sections, preferably completely, and - the drive unit comprises a first torque transmission element, wherein the first torque transmission element transmits torque from the drive unit to a guide element (2a, 2b) and - the drive unit comprises a second torque transmission element, wherein the second torque transmission element transmits torque from the drive unit to the hollow shaft, and - the first torque transmission element is arranged on the drive unit and - the second torque transmission element is arranged on the drive unit, and - the first torque transmission element is arranged in a frictional and/or positive manner so as to be detachable with respect to the guide element (2a, 2b) and - the second torque transmission element is arranged in the hollow shaft in a frictional and/or positive manner so as to be detachable, characterized in that - the first torque transmission element and the second torque transmission element are designed to be geometrically identical. - a first guide element and - a second guide element, wherein ∘ the first guide element and the second guide element define an interlock region through which people pass from an entrance region into a passage region, ∘ the first guide element and the second guide element define an interlock region through which people pass from an entrance region into a passage region, - at least one barrier element (6a, 6b) that can prevent and/or enable the passage of a person from the entrance region into the passage region within the interlock region, - a drive, ∘ wherein the drive has a drive unit and ∘ wherein the drive has an output unit, • wherein the drive unit, the output unit and the barrier element (6a, 6b) are operatively connected in such manner that the barrier element (6a, 6b) is movable by means of the drive unit into a position closing the interlock region and into a position releasing the interlock region, wherein ∘ wherein the drive has a drive unit and ∘ wherein the drive has an output unit, • wherein the drive unit, the output unit and the barrier element (6a, 6b) are operatively connected in such manner that the barrier element (6a, 6b) is movable by means of the drive unit into a position closing the interlock region and into a position releasing the interlock region, wherein • wherein the drive unit, the output unit and the barrier element (6a, 6b) are operatively connected in such manner that the barrier element (6a, 6b) is movable by means of the drive unit into a position closing the interlock region and into a position releasing the interlock region, - the output unit is designed as a hollow shaft, wherein - the hollow shaft is mounted so as to be rotatable with respect to the guide element (2a, 2b) and - the hollow shaft surrounds the drive unit at least in sections, preferably completely, and - the drive unit comprises a first torque transmission element, wherein the first torque transmission element transmits torque from the drive unit to a guide element (2a, 2b) and - the drive unit comprises a second torque transmission element, wherein the second torque transmission element transmits torque from the drive unit to the hollow shaft, and - the first torque transmission element is arranged on the drive unit and - the second torque transmission element is arranged on the drive unit, and - the first torque transmission element is arranged in a frictional and/or positive manner so as to be detachable with respect to the guide element (2a, 2b) and - the second torque transmission element is arranged in the hollow shaft in a frictional and/or positive manner so as to be detachable, characterized in that - the first torque transmission element and the second torque transmission element are designed to be geometrically identical.