Thomas the Tank Engine Model Train Set These toys are made of metal and plastic and can be connected with magnets. They have been used by children, so there are scratches and scuffs. There may also be some oversights. Please refrain from purchasing if you are looking for perfection or are overly concerned about condition. Thomas the Tank Engine Engine Collection BANDAI Additional Information No batteries or charging function. They are the type that you move by hand. Most of them connect with magnets, and the levers make it easy to disconnect the cars.