KDN tin tractor, which brings an unforgettable look into the past. This mechanical tractor allows forward and backward movement thanks to a spring that is simply stretched with a key. Every detail is preserved in its original state. When driving, it moves a row of three pistons on both sides. The once revolutionary KDN tractor is now available as an authentic antique for your collection. Add a unique piece of history to your home - a turnkey sheet metal tractor that will revive the atmosphere of old times.