Educational toy using multi-colored gears and parts based on STEM education. Learning Resources LER 9227 Machines in Motion Building Set Ages 5+ 1) The parts do not completely match the catalog. For example, there is no blue base block. Instead, there are 4 green rubber bands. (See pictures 3-5) 2) One red rubber band is missing. 3) However, it is possible to assemble all the vehicles shown in the catalog. 4) Another version of the catalog (including a parts list) was found at https://www.learningresources.com/amfile/file/download/file/10952/product/4271/ Thank you for viewing.