Mini V4 Brass Steam Engine Model Reverse Gearbox (without Boiler) Teching can be used with the

can be used with the generator

it will affect the performance

Special part for TOYAN

New and brand new design of 2017

The product is suitable for people over 6 years old

Mini V4 Brass Steam Engine Model Reverse Gearbox (without Boiler) Teching can be used with theMini V4 Steam Engine Model with Reverse Gearbox (without Boiler) Features: . Exquisite Appearance: The model of the steam engine is small and novel. It can be placed in the palm of your hand like a treasure. It is exquisite and mini. . Steam Engine Structure: Piston slide valve. . Reversing Structure: Forward and reverse two gears, automobile hand wave structure, often meshing fork gear. Miniature stainless steel crankshaft, with bearings at both