The Action-Stackers Little Builder set adds more versatility and motion to the classic Lauri Tall-Stackers 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 40 Tall-Stackers pegs, 4 wheels, 2 hexagon connectors, 15 square connectors, 8" Crepe rubber pegboard with 49 holes, activity guide. Works with all other Lauri Tall-Stackers and Mighty Monkey peg sets.