This detailed multi-part kit makes a single GWR DD5 twin gas tanker wagon in N gauge.
 
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.
 
Or 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.