3 years & up. Build up, out, and any direction you can think of with this awesome peg-based building set! Set up your peg base by inserting pegs into the holes of the foam peg board until you have a basic design you like. Stack the pegs on top of each other and use the connectors to build in whatever direction you'd like to go. For a touch of excitement, add different sized wheels throughout and watch them spin and rotate or use the wheels to build vehicles that roll. Engineering® has never been more fun! Included: 124 pieces: Pegs, wheels, and connectors, and Activity guide.