Three continuously moving independent braking mechanisms prevent freezing in icy or corrosive conditions. Built-in shock absorber limits fall arrest forces to under 900 lbs. and 4 1/2' per second locking speed. Forged steel, zinc-plated, self-locking swivel snap hook on each unit with load indicator that activates and alerts user of impact loading. Available with 3/16" galvanized or stainless steel wire rope, or 1" wide nylon webbing. Roughneck™ model incorporates black corrosion-resistant coating designed for severe environmental conditions. Capacity/working load for 20' web, 50', 70' and 95' cable models is 400 lbs. maximum and 75 lbs. minimum. For 20' cable models, capacity/working load is 310 lbs. maximum and 75 lbs. minimum. Meets all applicable OSHA regulations and ANSI standards, including ANSI Z359.14.