Metolius Gatekeeper Belay Carabiner

If you’re a single-pitch sport/gym climber and will likely never take your belay device off its carabiner, the Gatekeeper is a great option. Relative to its peers (the Black Diamond Gridlock, Rock Exotica Pirate Wire-eye, etc.) the Gatekeeper is light, effective, and has a low profile.

But if you’re a multi-pitch trad climber, or put a premium on versatility in your carabiners, you’re not going to like the Gatekeeper nearly as much as even garden-variety lockers.