Large D shape for great handling, huge gate opening and massive strength! At a rated strength of 72kN, it's one of the strongest carabiners in the world! Heat-treated, half-load tested (over 8000 lbf), and built to exacting standards, the 1/2" Large D is one very fine steel carabiner. Features: Exceeds NFPA 1983.01 standards Exceeds ANSI/OSHA strength requirements Meets NFPA 1983.01 construction standards UL Classification G Specs: Gate Opening: 27 mm / 1.06 in Major-Axis: 72 kN Gate Open: 22 kN Minor-Axis: 12 kN Weight: 283 g / 10.0 oz Length: 124.5 mm / 4.90 in Width: 70.6 mm / 2.78 in