The couplings are very good representations of the originals (accept for the hook adapter - more in a moment) The handles for our scale operators are included.
The wagons have a socket and pin to receive these loops and the pin is retained by a fine chain, so shouldn't get lost!
Back to the coupling adapter, The small black rectangle on one end of the coupling bars fits very well over a standard LGB coupling hook, making a simple and effective coupling to the rest of the train. The only drawback is that a baggage coach was usually trailed by these trains so you could do with 2 of these - one for each end. A bit of bent wire did the trick.
You get one adapter bar and two loop coupling bars in the set.