The Walthers Cornerstone HO Scale Kalmar Intermodal Container Crane is patterned after machines used in railroad intermodal yards since the 1970s. To speed loading and unloading of containers, railroads use these self-propelled giants to place piggyback trailers and containers on rail cars. These mobile cranes are used for side loading or unloading and are especially well-suited to smaller terminals. This intermodal container crane model is an ideal addition to your layout's container yard.