Abstract: The invention relates to a plug connection element for releasable connecting two adjacent wall elements of a transportation box, having a first U-shaped receptacle for an edge region of the first wall element, which is formed from a first base plate and an inner leg angled to the latter and an adjoined angled outer leg, and a second U-shaped receptacle for an edge region of the second wall element, which is formed from a second base plate and an inner leg angled to the latter and an adjoined angled outer leg, wherein the first and second U-shaped receptacle are identically aligned, wherein the first and second receptacle are connected to each other by means of a bending joint, so that the U-shaped receptacles is adjustable in terms of their angular position to each other.