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Shackle


 

A shackle is a U-shaped piece of metal secured with a pin or bolt across the opening, or a hinged metal loop secured with a quick-release locking pin mechanism. They are very commonly used in outdoor activities such as sailing.

Related Topics:
Pin - Bolt - Sailing

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A carabiner is a special kind of shackle used in mountaineering.

Related Topics:
Carabiner - Mountaineering

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