2mm finescale (1:152). Wheels, chassis, motor and gears are not included.
The tender model will require thorough cleaning of the mould support wax, priming and gentle rubbing down with fine wet-and-dry paper before adding details (fittings, handrails, steps, buffers, lamp irons, etc) and finishing.
NOTE: there is a separate model available with a cutout to fit a motor
here.