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Screw conveyors use rotating screw-like augers to move liquid or granular materials out of a bin or within a tube. The screw is commonly referred to as a "flighting." The flighting is typically set horizontally or with a slight incline. It is typically driven at one end, and can either wrap around a shaft or be shaftless. The faster the screw rotates, the faster the material will move from one location to its destination. They are useful in bulk handling industries, such as agriculture, for accumulation, drying, and moving material vertically.