"Amethyst" - Review of Petzl Attache Locking Carabiner
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One of my climbing instructors recommended these biners by name. The lock spins open and closed easily so that you can do it with one spin of the finger. This can be good or bad: if you're afraid rope friction might open it, it's a bad thing, however, I find it very convenient.
View Details: Petzl Attache Locking Carabiner >
View Details: Petzl Attache Locking Carabiner >
