3D resin printer replacement coupling for ViTrains class 37 - pair. I have 3D printed these to fit the ViTrains class 37. They are made from extremely tough resin and more than adequate to pull a full rake of coaches or wagons. Obviously they come without the metal hook, but you don't really need 2, the rolling stock hook should be enough. I have made them to accept the ViTrains hook if you want to add these yourself.  The price is for 2 couplings and will be sent out 1st class post.