406-4204 - VEX ROBOTICS PICK AND DROP BALL MACHINE 400+ PCS/KITExperience the art of engineering through the mesmerizing kinetic motion of the new VEX Robotics Pick & Drop Ball Machine by HEXBUG. Spin the crank to transfer energy through the arm linkages activating 3 sophisticated grabber hands that reach down and grab a ball. Keep spinning the crank to hoist the ball to the top of the machine where the grabber arms will automatically release and drop the balls onto the return ramp. This construction kit