This construction sets contains 176 pieces. The models of this construction set do not require using any batteries because power of water and air is used instead.
There is a big pump, which is used to start a model, and a hydropneumatic motor.
This construction set allows you to assemble two similar models, which means that a child can play with his/ her friends and even arrange competitions.
Size: 370 x 397 x 85 mm