Luckybird Plastic Pull Back Action Thomas the Train Moveable Chimney Friction Powered Toy Vehicles,Green Reusability: NO battery needed. Economic and Safe Toys Friction Powered & Easy to use:Just Rub the train with the ground that they open up. Funny:The train with the smokestack and automatically lifting Thomas Train is made of Plastic Expand your world of Thomas and Friends and create your very own Thomas adventure.