This BuckLimiter™ features a 50051 steel carabiner with a 3600 lb gate and 30351, a 2 1/4″ locking snap, with a 3600 lb gate load. Has an aluminum alloy construction inside and out while both the mechanism and housing is made of corrosion-resistant alloy. Features a braking system that is designed for smooth consistent operation to prevent “jerky” lock-ups. A tangle-free swivel top adds to the mobility and a 7′ extension for expanded work area. The BuckLimter™ has Dyneema polymer fiber 1″ webbing that is up to 15x stronger than steel. Resistant to moisture, abrasions, UV light, and chemicals. Weighs 1.9 lbs. The 6008-74D+4 meets the ANSI Z359.14 standard and is marked to 310lbs with a Class 1 rating.  Add prefix K [6008K] to order model that meets ASTM F887 Electric Arc Requirements.