This Mini Rhinoceros has excellent connections between crank shaft and every part enabling each leg to move smoothly. It has a very interesting mechanism, blowing into the fan makes the animal start walking against the wind. The wind power is conveyed to the legs by 3 gears. The 24-page science guide gives you the history of the real Giant Beest that Theo Jansen started building in 1990. The guide also includes easy to-follow assembly instructions.