Introduce your child to the exciting world of engineering with the Hydraulic Robotic Arm! Kids will spend approximately an hour putting together pieces in this 3-D model kit! Your builder will feel like a real engineer as they work with the sturdy die-cut plywood pieces. With assembly taking about an hour, this is a great solo project for older builders or family activity for younger builders. Whatever their age, kids will have fun learning about robotics, levers, fluid dynamics and engineering principles as they build. Once built, this arm rotates 90 degrees, stands 13 inches tall and stretches 16 inches wide. Kids can use it to pick up and move small objects, a feat that is sure to mesmerize your budding engineer! Give your child the satisfaction of creating something new with this 3-D Hydraulic Robotic Arm kit!