Calley is a shunting engine and is Dunbar's feisty assistant. The Fire & Rescue Cars allow her to perform her many different tasks. Enjoy the action-packed train play with Chuggington Die-Cast! With its wide assortment of collectible characters and exciting playsets, children can recreate favorite Chuggington episodes or new adventures. Chuggington Die-Cast vehicles are Stack Track compatible so you can build higher with sturdy track connections and easy-to-connect track. Build multiple layouts for more imaginative play (Stack Track playsets sold separately).