Product number: C89. BNA Bogie Steel/Aluminium Ingot Wagon - OO unpainted plastic kit. They were used to carry steel plate or billets from Scunthorpe, or aluminium ingots from Fort William. About 50 wagons were rebuilt - coded BMA-A, but changed in 1999 to BNA to distinguish them from the BMA wagons rebuilt in 1989 from BDAs.