Heros Express Super Circle Train Set Heros Wooden Toy Train Set Super Circle "My First Train Set" Heros toys are still made in Germany: made from PEFC or FSC-certified Germany & Austrian natural forest wood. Heros toys also meet the extensive toy safety requirements of European standard EN 71. Train Set is compatible with BRIO, Thomas the Tank Engine, and others. Assembled train tracks measure 17.5" diameter.