Children expand their STEM skills and learn to reduce, reuse and recycle with this easy-to-use kit! Kids just use their own soda can and the materials from the kit to build a cable car that moves forward and backward, up and down! Kit includes 33 pieces needed to assemble the cable car, plus a detailed assembly guide. Reversing shaft measures 5 1/2". Requires 2 “AAA” batteries (not included).