The carbine is a climber's best friend. Carabiners are used for belaying, for holding the rope, fastening any equipment, rappelling, etc. Climbing is impossible without carabiners. Mountaineering and climbing carabiners are made of durable and lightweight Zicral zinc and aluminum alloy.
There are also special markings on the carabiners to determine their characteristics.
Locking carabiners (coupled) have a clutch that locks the latch to prevent its accidental opening. Such carabiners are used to organize belay points, in belay systems, when rappelling, fastening lanyards, etc.
Non-blocking carabiners are mainly used as part of braces or friends (embedded elements) and can open with a sudden jerk or vibration. Such carabiners must be used strictly for their intended purpose, but not for insurance.
D-carabiners are used to secure the rope in a guy line or for belay (only compatible with Gri-Gri). Compared to similarly sized pear-shaped carabiners, these carabiners are more robust as the load is distributed primarily over the long, solid axle.
Pear-shaped carabiners are used for belaying (with all types of belay devices, with Munter's knot or Italian knot), for securing the rope. The latches of these carabiners are easier and wider to open, which makes them easier to use.
The opening of the latch is the distance by which the upper edge of the latch is displaced relative to the base of the carabiner. Small opening carabiners are lightweight and compact. Large opening carabiners are more comfortable to use.
Classic locking system with a clutch locking latch on the thread. It is considered traditional, safer and more reliable.
The carabiner can be unlocked by making two or three movements with the latch. The main advantage of this type is the self-locking of the carbine. However, you should not completely trust the automatic system: if dust enters the mechanism or during sudden temperature changes, the system may malfunction. Automatic karabiners are best used on Via Ferrata routes and when organizing belay points so that the karabiner is locked in one position and the rope does not catch on the latch.
The most popular form now, which greatly facilitates the use of the carabiner. It prevents the rope from clinging to the carabiner.
A new type of latch developed by the French company Simond, whose ergonomic design and reliability is even higher than the KeyLock. This carabiner is much softer to open/close, and the rope also does not cling to it.
Types and varieties of carbines can be qualified according to several parameters.
Latch or clutch type.
Purpose of the carbine
Carabiner shape (there are many forms, but there are several basic ones).
Asymmetric automatic locking carabiner with locking indicator.
Carabiner for a wide variety of applications: attachment of various devices to the gazebo, installation at the end of the lanyard.
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