It is an additional coupling for the chopper Krone Big X 1000, the original shredder. I noticed that he only has a normal trailer coupling. Thus, the coupling of the loader wagon or large trailer with ball coupling is not possible. Therefore, there is now this clutch. All trailers can now be hung on the chopper. A Powerattacher missing, since he does not have to drive the trailer and only reinhäckselt. Reversing the clutch ankuppel, done. Helper does not function with the helper trailer goes anyway.