These are wheels that were actually used on a miniature SL (steam locomotive) 40 years ago. Made of cast iron. Outer diameter 250mm, weight approximately 2.8kg/piece. A rare and unique item that's hard to find. Please use them for design displays at school festivals and cultural festivals. If you polish them up and paint them, they'll make great retro objects. They can also be used as weights to secure tarps and tents when camping. Please assess the condition from the photos. Thank you.