Material: With an inertial breaking mechanism that locks into place, self-retracting lifelines are fall protection devices that immediately stop a fall within a few inches, Made from light-weight aluminum housing for maximum operator comfort and efficiency. Webbing: The cable retracts to eliminate slack in the lifeline and offers workers a great amount of mobility from the anchor point, This 6 ft. dual self-retracting lifeline is manufactured using 0.1 in. thick, 1 in. W Dyneema Core, providing maximum protection. Safety Applications: Ergonomically designed and ideal for direct connection to most harnesses, our twin leg SRL features a centrifugal braking system, steel carabiner, steel snap hooks, a visual load indicator and a 300 lbs. combined weight capacity. Certified: Certified for use during vertical or horizontal applications, this product meets ANSI Z359.14-2012 and CSA Z259.2.1 standards and are used for many industrial and recreational functions, like rock climbing, emergency rescue, construction etc.