This is an Alko AMC 58 G-1 towbar which was factory .fitted to my Bessecar E560 motorhome, year 2007. It is straightforward to fix, with four bolts and reinforcing plates. There is also a 7 pin plug for the electrics, with the 'box' and wires to splice into the existing loom for lighting. The tow ball is a swan neck type which can be released from the main towbar frame, by twisting a knob. The unit is plated with the Alko info. Probably only for collection only, so Chester NorthWales area, on in a few weeks Cambridge