This self-retracting lifeline is built for contractor use with a 20-foot galvanized steel cable, an internal inertial braking system, and a load-indicating swivel snap hook that signals when a fall event has occurred. The glass-filled nylon housing adds durability in rugged job-site conditions. A double-locking twist-lock anchorage carabiner is included for secure tie-off. It meets Class 1 ratings for overhead anchorage use.