Manfrotto brings you a series of best in class background support system that will make you work a lot easier. These systems are reliable, simple to use flexible and strong. It could hold most of your support needs for materials like drapable, hand painted canvas, paper, background, etc. It can be used both in studios on location setups. Manfrotto 091 MCB Black Metal chain for Expan drive gives you the desired flexibility and power you need. It can replace plastic chain in Expan 046 and give it additional strength. Manfrotto 091MCB Black metal chain has technopolymer that improves performance. Weighting at around 1.32 lbs and a length of 3.5m it is strong, durable and lightweight.