The Guardian Diablo 33 ft. Self Retracting Lifeline is designed with the worker in mind, featuring a stackable space-maximizing design, high strength web lifeline and a built-in swiveling anchorage point. It will extend as the user moves away, and retract automatically enabling the user to move about within a recommended working area at normal speeds. Should a fall occur, a speed sensing brake system will activate stopping the fall and reducing the forces imposed on the user to safe levels.