This contains the eccentric gear, the back boiler bracket, the crossheads and the water tank filler for the top of the water tank. This printed out well in white strong flexible and I used it to complete my 1:20 scale Kauila project per the images above. The eccentrics were not quite functional and if you decided to go ahead and purchase the kit anyway note that you will have to cut the length of the eccentric blades down to prevent them from being jambed in reverse. You could just wait for me to realease a revised eccentric kit and purchase the rest of the parts separately.