American-made, weighs less than 4 poiund with 13 ft. of working capacity and quick fall-arrest capability measured in inches. Corrosion resistant , housing made of aluminum and stainless steel, including a stainless steel top swivel. High Strength wear-resistant webbing capacity of 400 pounds. No annual factory recertification required. Double-inertia, high-strength stainless steel braking system arrests free falls within inches.Visual impact indicator warns that the unit has experienced fall-arrest forces and must be removed from service. Compact energy absorber minimizes fall-arrest forces.