For chassis with AL-KO chassis, chassis with flanged, usable frame extension or other chassis suitable for mounting the device. The trailer coupling is a safety component and may only be installed by qualified personnel. Self-installation is not permitted. The revolution in trailer hitch assembly: Whereas in the past the AHK always had to be adapted exactly to the width of the frame or frame extension, the width of the LAB 1000 can be adjusted to the vehicle and can thus be mounted on almost any vehicle. The adjustment process is very simple: After mounting the side plates, the ball is pushed into the middle of the two screwing points and the clamping screws are tightened - that's it! To further optimize the weight, you can saw off the protrusions at the right and left ends - but this is not absolutely necessary.