Socket wrench for professional loosening and tightening of rectangular clamping nuts on steering knuckles. Cast, design with machined out profile and drive square.Application: Mercedes-Benz and MAN, for reinforced 9 t front axle VL5 DC trailer axle Discos Trailer from Bj.97-5/2000 with compact bearing (HUB-Unit). Identical in construction with the non-driven Actros front axle.