Decent set! Initially I was not sure about the reliability of Smartmax cars. So I could not stop at any of the many Smartmax sets with vehicles. And then we came across … a barrel. It contains several parts for creating vehicles, 4 pairs of wheels, 3 types of multi-colored rods – long, short and rounded, 6 balls. You can’t build many cars at once, but you certainly 2 different ones, and there are many combinations. We will buy our amgnets and cars enthusiast other sets in the future.