Build your very own Hydraulic robot arm with this National Geographic kit by Cubic Fun. Pick up, move or hold objects by converting hydraulic pressure into mechanical motion. Four pairs of syringes control different motions of the robotic arm:– Syringe 1 & 4 – Lifts or lowers the arm– Syringe 2 – Open or closes the jaw– Syringe 3 – 120 Degree arm rotation
