Wichard Twisted Shackle - 5mm 

Forged stainless steel captive pin twist shackle. Captive pin shackles 'patented'. Not only are these self-locking, the pin is also connected to the body at all times, even when fully opened, consequently, there is no more risk of seeing it fall in the water, which would make the shackle unusable. These shackles can therefore be fitted completely safety using just one hand.