Drawbar for a commercial vehicle trailer

The draw bar (1) has a draw tube (10), which is arranged in a vehicle longitudinal direction, a drawbar eye (13) attached at its front end, and units for positive longitudinal locking of the draw tube with respect to a drawbar box (5). The draw tube lies flat against two wall sections. The wall sections are side walls, which are arranged in an inclined manner such that a trapezoidal cross section outgoing from a trapezoidal base is mounted between the side walls and on which inclined side walls of the draw tube are supported.