Different every time you build, this versatile, interconnecting gear set fosters imagination and provides opportunities to experiment with simple mechanics and science. Supports STEM by introducing children to sorting, grouping, counting, designing, constructing, and putting physics into play with spinning gear movement. Set includes: 8 peg adapters, 1 crank, 18 small pillars, 12 large pillars, 6 pillar connectors, 12 6-way axles, 24 small gears, 12 medium gears, 8 large gears, 6 large bases, 8 medium bases and 12 small bases