Lifeline pelican hooks open with a pull of the quick release plunger then close automatically when pressed shut. Capable of being released under load these hooks are used as a removable fastener in lifeline applications where a gate is required. Constructed of investment cast 316 stainless steel for maximum corrosion resistance and durability. A 6-7/8" B 8-3/8" C 3/16" Wire D 5/16"-24 RH