The carabiner is a simple yet important tool that was first used back in 1911. The metal loop with a spring-loaded gate is widely used in rope-intensive activities like mountain climbing and window cleaning, but the tool has also been adapted over the years to accomplish smaller, less extreme tasks.
Aside from mountaineering and similar activities, the carabiner has become most commonly known for clipping keys to one’s belt loop.
Since these are becoming more and more common, the carabiner has begun to make it on knives (and vice versa). If you’re interested in attaching your knife to your bag or your keys to your knife, these knives with carabiners will do the trick. Note: Bear in mind that these aren’t designed for actual hard-core use.
Gerber Curve

The Gerber Curve is a unique multi-tool with an interesting design and a clip resembling a carabiner. Its spring-loaded gate is a dead giveaway. The knife itself comes with a few tools, including a knife, screwdrivers, nail file, and more. The tools lock with a cool device.
Again, this isn’t something you’d want to use while rope climbing, but it is something you could clip to a bag or a belt loop.
Leatherman Crater C33

Leatherman made more of a proper knife with a carabiner than the Curve. The Leatherman C33 Crater features s 2.6-inch blade made from 420HC stainless steel with a glass-filled nylon sheath. The Crater has a proper liner lock that makes it a functional knife for harder tasks.
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