The etches for the locomotive frames and body are in nickel silver, while the 2000 gallon Webb tender, from the existing LRM range, has brass body with N/S frames. The prototype driving axle centre bearing carrier has been adapted to provide a compensating beam support, and cut outs are etched for fitting standard hornblocks. The boiler/smokebox and footplate/cab have been designed as two separate units for ease of construction and painting.

The comprehensive specification of the kit includes a sprung radial truck and nickel silver castings for the piston covers, slidebars and piston rods/ cross head. Lost wax brass castings are supplied for the majority of the other detail components, in addition to turned handrails, whistles, sprung buffers, etc. There are 24 pages of A4 instructions, including detailed "exploded" drawings. Wheels, motor and gears are required to complete.