Features The D4 Work/Rescue Descender features a unique and innovative cam action, which offers precise control at slow or fast speeds The progressive cam works by way of one cam operating inside another cam The D4 is the only ANSI certified descender on the market today For use with single ropes from 10.5 – 11.5mm 7/16" Working Load Rating WLL: 240kg 551lbs Specifications Color: Black Certifications: CE EN12841, NFPA 1983, ANSI Z359 Strength: MBS 16kN (3597lbf) Weight: 655g 23oz
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