In the late 1990s, Railtrack converted 250 former tank wagons into PNA open spoil carriers. 44 of them used Gloucester pedestal suspension. Of these, 22 were fitted with evenly spaced bodyside ribs, while the other 22 had a larger gap between the ribs above each axle box. The kit is a twin pack, enabling one of each variant to be built, with self-coloured green body mouldings, one-piece black chassis, wheels, couplers and transfers. The picture shows weathered versions of completed models.