Carabiner

Clockwise from top left: D-shaped wire gate, D-shaped straight gate, Oval straight gate, Pear-shaped auto-locker, D-shaped screw-locker. Center is a standard carabiner rating.

A carabiner (/kærəˈbiːnər/) or karabiner is a metal loop with a spring-loaded gate used to quickly and reversibly connect components, most notably in safety-critical systems. The word is a shortened form of Karabinerhaken, a German phrase for a "spring hook" used by a carbine rifleman, or carabinier, to attach items to a belt or bandolier.

单词	Spring hook
释义	Spring hook 英语百科 Carabiner A carabiner (/kærəˈbiːnər/) or karabiner is a metal loop with a spring-loaded gate used to quickly and reversibly connect components, most notably in safety-critical systems. The word is a shortened form of Karabinerhaken, a German phrase for a "spring hook" used by a carbine rifleman, or carabinier, to attach items to a belt or bandolier.
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Spring hook

Carabiner