Carabiners come in different shapes, depending on their use:
Pear-shaped (or HMS) carabiner
The opening on a carabiner is the distance between the gate (in the open position) and the nose.
- Carabiners with small openings are lightweight and compact.
- Carabiners with large openings are easier to use.
There are two kinds of locking systems for locking carabiners:
This is the classic closure system and comprises a ring on a threaded gate.
The shape of the nose dictates the closure system between the gate and the body of the carabiner.
In the past, all carabiners had a notch, or a hook on the nose of the carabiner. This is a less than smooth system as the hook easily catches on the rope and item of equipment.
Today, most carabiners have a snag-free Keylock system. This makes them easier to use.
Simond has another kind of carabiner nose system called the Spider, whose ergonomic and totally snag-free design is even smoother to use than the Keylock.
Understanding the markings on a carabiner:Every carabiner bearing the CE or UIAA marks will show the following information: - Breaking strength along the major axis with the gate closed- Breaking strength along the minor axis- Breaking strength along the major axis with open gate