A fleet of specialist wagons for industrial and building sand were constructed in the early 1950s. They were designed for emptying by tipper or grab. Withdrawal started in the 1970s, some lasting in Civil Engineers service into the 1980s. Transfers for early and post-TOPS BR. These finely moulded plastic wagon kits come complete with pin point axle wheels and bearings, 3 link couplings and transfers. This kit is supplied with pre-coloured moulded parts although painting can improve the appearance. Additional parts to enable the vehicle to be modeled incorporating modifications made to the prototypes during their working life are included where appropriate.