This model will make a single Rotank including wagon chassis and Tanker. 
 
Due to the light weight wagon body of this model, if the wagon is ran without the tanker as a load, some extra weight might need to be added in a different form for a smooth run of the wagon.
 
The pack comes as two variations:
 
Just the kit with 3D printed parts where  wheels and couplings need to be supplied seperately. Graham Farish spring coupling socket is modelled onto the chassis for easy attachment.
 
With 2 wheel axles and 2 Graham Farish spring coupling to make a full wagon. This variation is subject to stock levels and available supply.