Double-Gate, Double Safe — The Grivel Twin Gate Carabiner line is simple and brilliant. Two independent gates add safety and eliminate a need for a locking mechanism.
Grivel calls them the safest carabiners ever made. A rope clips easily through the double gates, which snap in different directions. But a rope cannot unclip itself when twisted, a rare but present danger with traditional carabiners.
They are versatile — a climber can use a Twin Gate ‘biner on quick-draws while clipping bolts or at a belay station in place of a traditional locking carabiner.