Circuit-Test Hydraulic Robotic Arm Kit - Learn Hydro Mechanics and Robotics. Features : Make Hydro-mechanics a fun learning experience for the young engineering enthusiasts. This kit does not require batteries nor does it use any motors instead it is powered by water.. The Hydraulic Arm Edge can command six axes of varied movements: the gripper to open and close up to 1.89 inches, wrist rotation of 180 degrees, wrist mobility of 98 degrees, base rotation of 270 degrees, and shoulder motion of 45 degrees.. With a vertical reach of 16.35 inches, horizontal reach of 12.42 inches, and lifting capacity of 50g, your robotic friend is ready for your genius to erupt. With the removal of the gripper, you can activate the suction apparatus. This feature enables users to elevate objects with a large surface area, such as a mobile phone.. Execute all commands equally with a braking system that is integrated in the lever controllers.. Well guided pictorial instruction manual is included to assemble the 229 part kit.