Wichard Marine Captive Pin Bow Shackle - Diameter 6mm - 1/4in. Drop-forged 316L stainless steel construction is a perfect blend of strength and corrosion resistance and ensures that shape remains intact at loads that meet or exceed the deformation point. These bow shackles are ideal for applications that involve loads from multiple directions. At the thumb screw end the elasticity of the shackle's body locks the pin's position into one or other of its small indentations. There is no need to worry about it accidentally coming loose due to vibrations. The pin is captive to prevent accidental loss. Package Contents: Wichard Marine Captive Pin Bow Shackle Wichard Marine 1443: Captive Pin Bow Shackle - Diameter 6mm - 1/4in