KidzRobotix Hydraulic Robotic Arm Kit Overview: Explore simple hydraulic principles and build a working mechanical arm that can move and grab. Includes robot arm parts and instructions. 8yr+ Build your own water-powered hydraulic robotic arm! The detailed instructions make it easy to connect all the parts. As kids push the syringe, water flows through the tube, transferring pressure and causing the robot claw to open, close, and grab whatever you want. Features: Kit for building a water-powered robotic arm Encourages spatial reasoning, logic, engineering skills Explore simple hydraulic principles Detailed instructions make building fun and easy Includes robot arm parts, instructions High-quality materials and construction - Exceptional build-and-learn experience 8yr+