Set Includes: 4 peg adapters, 11 small gears, 5 medium gears, 4 large gears, 7 small bases, 4 medium bases, 3 large bases, 6 six-way axles, 8 pillar connectors, 9 large pillars, 12 small pillars, 1 crown gear, 2 T-connectors, 2 angle connectors, 2 spring connectors, 1 propeller and 1 crank.