Plastruct Polyliner is a high-quality, super slippery liner for dump trucks or trailers, stone slingers, cargo holds, feed bunks, hoppers, wagons, and wear plates. It provides an even flow and works for materials such as grain, clay, stone, and sludge. Product will not stick to the liner therefore eliminating waste product or manual clean-out. Plastruct Polyliner will protect and extend the life of your box, bin or chute. Plastruct Polyliner can also be used on badly worn, rusted, or rotted sides and floors rather than heavy and expensive wood and steel replacements. Its also a lot slipperier! ents. Its also a lot slipperier!