The Bent Gate Carabiner
Like a straight gate carabiner, bent gates are exactly what they sound like: carabiners with a gate that’s slightly curved. While not as frequently seen in the outdoors, these carabiners are primarily used by climbers, as the bent gate carabiners receive rope much more easily than the straight gates. The curve in the gate allows for extremely quick hook-ins, which can be vital as climbers make their way up the wall.
The Twin Gate Carabiner
A relatively recent invention, the bent gate carabiner is an interesting medium between locking carabiners and straight gaters with no lock. These carabiners have two gates that open on opposite ends, creating a sort of lock that requires special pressure to open. While not widely used, they are effective in situations that call for a bit of extra safety; some climbers or outdoor enthusiasts actually prefer them to traditional straight or bent gate carabiners.
While not necessarily a “type” in itself, the locking carabiner is the carabiner most widely used in outdoor sports, climbing in particular. These carabiners have a gate that’s reinforced by a locking mechanism, which secures the carabiner in its closed position and ensures absolute safety.
Since it requires a double motion to open, these carabiners are ideal for setting up climbing gear and securing kayaks or boats to way-points without the fear of an accidental release. That said, for quick transfer mid-climb, these carabiners are not as quick to open as a straight or bent gate with no lock.
Types of Locks:
Locking carabiners often come in three different varieties.
Screw lock: In screw lock carabiners, a metal cylinder must be screwed up to cover the nose once it’s in place or down to allow the carabiner to open.