Trailer device

A tow hitch comprising a movable ball neck (10) with a pivot bearing body (14) and a coupling ball (18), and with a pivot bearing unit (20) in which the pivot bearing body (14) is accommodated pivotably about a pivot axis (22), and with a rotation blocking device (50) having at least one rotation blocking body (54) which is movable in a guide direction (57) with at least one component in the radial direction to the pivot axis (22), wherein the rotation blocking body can be brought into engagement with a receptacle (58, 60) by movement in the guide direction (57), and with an actuating body (52) having a wedge surface extending transversely to the guide direction and movable in an actuation direction, by means of whose movement the at least one rotation blocking body is movable in the guide direction (57), and wherein the rotation blocking device comprises at least two rotation blocking bodies (54) and that the rotation blocking bodies are movable by a common actuating body (52) in the respective guide direction.