This is a self-feeding robotic platform. It comes with a robotic arm with 3 degrees of freedom robot, a remote, a ball, a base and a slide path for the ball. The platform is assembled and tested before shipping.
This is perfect for robotic exercises that run for thousands of cycles. Picking up the ball from the bottom, placing it on the top precisely, waiting for its descend, and then picking it back, for a thousand time is not a trivial exercise. Many things can go wrong if the assembly or wiring is not done correctly. 
 
This is a great challenging platform.
 
Have fun!