Lego Mindstorms NXT Resource Set 9695
This updated set features 817 elements that enable you to build and program MINDSTORMS robots with even more functions than ever before. Includes plenty of special elements such as belts, unique connectors, a worm gear, and structural elements, as well as other LEGO elements such as beams, axles, and connectors. It is the ideal supplement to your LEGO MINDSTORMS Education Base Set for classroom, after-school, or robotic competition use!