Cement Wagon - BigJigs Rail BNIB £3.00 Out of stock. This wooden Cement Wagon is clearly labelled and ready for immediate service! Bigjigs Rail wooden wagons feature detachable loads that can be lifted by a Bigjigs magnetic crane. Magnetic couplings ensure compatibility with all other engines and carriages in the Bigjigs Rail range. Most other major wooden railway brands are compatible with Bigjigs Rail.