OWI  Hydraulic Arm Edge Kit Step away from the grid - Hydraulic Robotic Arm - No Electricity or batteries needed Discover hydro-mechanical technology and have fun operating your own hydro-mechanical robotic arm Removal the gripper and activate the suction apparatus. Enables operators to "vacuum" and lift objects 6 Axes of movement: Gripper opens to 1.89 inches, Wrist rotation 180 degrees, Wrist mobility 98 degrees, Elbow range 44 degrees, Base rotation 270 degrees, and shoulder motion 45 degrees Detailed graphic illustrations equate to successful kit building. - OWI products are made in Taiwan and include assembly instructions only in English. Other items not matching these descriptions are illegal copies