What could you do with a third arm? Build a remote-controlled, hydraulic-powered one from scratch and find out! Measure, cut, ream holes and tap to construct your own: 3 cylinders moving the arm and 3 cylinders for the control panel. Follow the instructions the first time, then tinker to improve it. For ages 9+ with adult supervision.
Hydraulic Arm Activity 10/pkg
This stock product is available in our warehouse. 8 unit(s) are on hand for immediate shipment.
Weight: 8.6 lbs