Following in the footsteps of award-winning products like the Air Power Racer and Hydraulic Arm Edge, OWI brings you a new kit that combines elements of the aforementioned products while adding new forms and functions for multiple layers of fun. With 3 in 1 Hydraulic/Pneumatic Edge Robot, children ages 6+, as well as adults with an affinity for building, can take this 54-piece kit and build THREE different models (at three different difficulty levels) that all utilize the power of air and water No batteries or motor required The detailed instruction manual will guide builders as they create a pressure-driven inchworm robot (beginner), dinosaur robot (intermediate), and even a robot arm (expert) If three pressure-driven robot models aren't enough, the included block system can be rearranged in a plethora of ways allowing for the creative expression of designing a robot free from the guidelines set by the instruction manual. The pressure system in the 3 in 1 Hydraulic/Pneumatic Edge Robot allows for the application of both water (hydraulic) and air (pneumatic) power. It illustrates these scientific principles while allowing for experimentation to further reinforce learning. Bring all the principles of S.T.E.A.M. into your child's playtime with OWI's 3 in 1 Hydraulic/Pneumatic Edge Robot.