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 ½" Large D is one very fine steel carabiner. Exceeds NFPA 1983.01 standards Meets NFPA 1983.01 construction standards UL Classification G

Part #	Description	Gate Opening mm / inch	Major-Axis Strength	Gate Open Strength	Minor-Axis Strength	Weight grams / ounces	Length mm / inch	Width mm / inch
OP12S55LNFPA	1/2" Std. D NFPA Screw-Lok	27 / 1.06	72kN	22kN	12kN	283 / 10.0	124.5 / 4.90	70.6 / 2.78
OP12S58LNFPA	1/2" Std. D NFPA Screw-Lok	27 / 1.06	72kN	22kN	12kN	283 / 10.0	124.5 / 4.90	70.6 / 2.78
OP12S58SLNFPA	1/2" Standard D Screw-Lok Gold Side Swing Gate	36 / 1.42	72kN	22kN	12kN	289 / 10.2	124.5 / 4.90	70.6 / 2.78
OP12S58Q3NFPA	1/2" Standard D 3 Stage Quik Lok Gold	27 / 1.06	72kN	22kN	12kN	309 / 10.9	124.5 / 4.90	70.6 / 2.78