This is a miniature connecting rod (a rod-shaped part in an engine that connects the piston and the crankshaft) for an automobile engine. This item was received after a demonstration of forging a miniature connecting rod at the Toyota Commemorative Museum of Industry and Technology (not for sale). This item is not sold, and even if you watch the demonstration, there is a limited number available, so you are not guaranteed to receive one. Please confirm the above explanation and photos and agree before purchasing. Please note that we do not accept returns after purchase.