The Harken^® Captive Halyard Shackle is a unique shackle that includes a secondary pin that keeps the shackle permanently secured to the halyard and in the correct orientation. A shackle is a U-shaped piece of metal that is secured with a clevis pin or bolt. They are the primary connecting link in rigging systems on boats and they allow different rigging sets to be connected or disconnected quickly. Forged from Type 316 stainless steel, this shackle is polished to a high luster and stamped with the screw pin diameter for easy reference. The Captive Halyard Shackle can be used as an outhaul shackle.