The Walthers Cornerstone HO Scale Big Grain Storage Bin is based on structures found at elevators, feed mills and on farms across the continent. Featuring realistic corrugated-metal construction complete with panel lines, grain bins can be used alone or with all kinds of Walthers Cornerstone grain handling structures. Typically, grain bins are connected to other structures with the Grain Conveyor (933-3124, sold separately). All grain conveyor parts are molded in an appropriate base color and complete instructions are provided.