This 4mm. scale “18.83” gauge etched brass, nickel-silver, whitemetal and brass castings kit was released by Alan Gibson. The Gibson wheelsets are to “18.83” gauge. The kit currently has no motor or gearbox, and paints, transfers and couplings of choice will be required. Completeness of the kit cannot be guaranteed. The Gibson instructions and drawings manual is included, as are Gibson tender wheelsets.