The Young Engineer's Gear Building Set
This is the building set that allows junior engineers to construct an unlimited variety of twisting and turning contraptions. Using the principals of STEM (Science, Technology, Engineering, Math) education, the set is comprised of 225 differently colored plastic pieces including 8- and 12- toothed gears, interlocking bases, support columns, hand-cranks, and spinning wheels. Made of durable, non-toxic ABS plastic, the pieces snap together and pull apart easily. Ages 5 and up.