Hytrol 1.9″ Diameter Gravity Roller Conveyor is used to convey cartons packages totes in a variety of manufacturing and warehousing activities including: shipping lines, assembly lines, order picking lines, checking & packing lines, etc. Most items convey easily with a minimum amount of effort. Gravity roller conveyor lines may be slightly inclined in some applications to achieve gravity product flow. The 1.9 inch gravity roller conveyor is the the most common work horse of gravity roller conveyor. It is strong, durable, supports broad applications, and safe.