This product is a "mini steam engine engine model" and it can operate

normally after connecting a small boiler. It can be installed on a model

ship or a small model as the engine power of the model. It is also a

handicraft with good collection significance.

Product introduction: length 35MM, width 24MM, height 31MM, weight 46G.

Flywheel diameter 21.5MM, shaft diameter 2MM. Cylinder diameter 4.5MM.