Manfrotto introduces some best in class background support systems that would simplify your work and relieve you from the hassles related to backgrounds, which can always cause a distraction during shooting. These systems are reliable, flexible and simple to use. These systems are ideal for both studio and on-site use. The ManFrotto 091 MCR Metal Chain improves the strength, flexibility, and reliability of your Expan drive immensely. It can replace the plastic chain on Expan 046. This red-colored chain is made of durable and long-lasting technopolymer material, which helps improve performance and longevity of service. The chain weighs around 1.32 lb and the length is 3.5 m (137.8 inches).