This is a completed toy designed for children.
From the Lego website:
Full steam ahead! The exciting and colorful Emerald Express steam train is packed with detail, from the old-fashioned funnel to the driver’s cab and the bars at the front that push cows out of its way. Moo! When it’s time for a change, you can rebuild it into a fast rocket train or a carriage. Combine with additional Emerald Express sets to create an even longer train!
- 3-in-1 model: rebuilds into a rocket train or a carriage
- Features chunky wheels, funnel, light, cattle bars and a driver’s cab with windows