The action-stackers big Builder set adds more versatility and motion to the classic Lauri Tall-Stacker building activity! The new connectors allow children to build sideways and at angles, and the movable knobs allow for spinning motion! The wheels add even more fun! Children can build abstract creations, helicopters, cars, windmills and more! It's an engaging and educational freeform activity for ages 3 and up. Includes 75 tall-stackers pegs, 6 wheels, 5 hexagon connectors, 30 square connectors, 11.5" Crepe Rubber pegboard with 100 holes, activity guide. Works with all other Lauri Tall-Stacker and Mighty monkey peg sets.