Good Project for Kids and Demonstrates Hydraulics Concept
Worked on this with my 7-year old. It's a good little kit but definitely requires adult supervision as elements of the assembly are quite challenging. Takes much longer to assemble than a typical Lego kit and more interactive when done - both good things. We accidentally broke a part during the assembly and thankfully the folks at Unicorn were able to provide us with a replacement part promptly (for a nominal handling fee). Great customer service experience.