The 019-8012 4 Person Rope Horizontal Lifeline Kit comes with a 30 ft 16 mm double braid rope with 4 o-rings, 2 heavy duty cross arm straps, rope tensioner, and 2 carabiners. The swivel connection point keeps the rope from twisting while in use and the tensioner comes with a wrench that is easily attached and stored within the unit. All of the kit components fit in the convenient carrying and storage bag. Additional rope lengths options are available to cover multiple applications.Material: 16 mm Double Braid rope, 16-plait cover and 8-plait core, Steel Tensioner, Forged Steel O-rings, 1.75 in Green polyester cross-arm strap webbing – Tensile strength >9,500 lb, Polyester thread, Carabiner tensile strength > 5,000 lb; gate rated at >3,600 lb, Steel Swivel Eye, rated at 5,000 lb