Roller Conveyor is another popular Material Handling System in transporting products in cartons, boxes, totes, or on pallets. The system is very powerful that it is suitable for light and small items as well as large heavy products. The conveyor can be simply gravity pulled (Gravity Roller), powered by motorized chain (Chain Driven Roller) or driven by polycord (Line-Shaft Roller). The standard rollers are either made up of zinc-plated mild steel or stainless steel.