Ergonomically designed for ease-of-use and is ideal for direct connection to most harnesses. Lightweight, stays out of the way and can easily be used as a lanyard replacement. Locks quickly, stopping a fall within inches and providing more protection at low heights. Tension is always kept on the lifeline, which reduces dragging, snagging and trip falls. Features impact-resistant housing, automatic, quick-activating arrestor, impact indicator, 3,600-lb. rated gate openings on carabiners and hooks, and 6' or 9' retractable lifeline. i-Safe™ enabled. Capacity: 420 lbs. Meets or exceeds all applicable OSHA regulations and ANSI standards.