Abstract: A position adjustment device for a direction reversing guide for vehicle safety belts includes a guide rail, a displacement element with an arresting mechanism, advancing member, replacement member and possibly displacement levers. This height-adjustment device is suitable for high stresses and at the same time can be simply and inexpensively produced. The guide rail (1) essentially has a C-shaped cross section, the adjustment element (12, 12') is guided along end strips (3) of the guide rail (1), and a detent element (19), which is taken along by the adjustment element (12, 12') extends through recesses (6, 18) in the guide rail (1) and the displacement element (12, 12'). A metal spring (21, 32), which forces the detent element (19) into the recesses (6, 18), is provided for maintaining the arrested position at the adjustment element (12, 12'), and a position restoring spring for the position adjustment device is also provided.