Amazon has the OWI Robotic Arm Edge for $38.59 with free shipping.

Command the robotic arm gripper to open and close, radial wrist motion of 120°, an extensive elbow range of motion of 300°, base rotation of 270°, base motion of 180°, vertical reach of 15 inches, horizontal reach of 12.6 inches and lifting capacity of 100g. Some of the added features include a search light design on the gripper and an audible safety gear indicator is included on all 5 gear boxes to prevent potential injury or gear breakage during operation. Total command and visual manipulation using the "5's", five-switch wired controller, 5 motors, 5 gear boxes, and 5 joints. For ages 10 and up. Add USB Interface cable and Software, OWI-535USB, (not included) to integrate programming and expand the capabilities of the Robotic Arm Edge. [ Shop Now ]

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