There are several types of carabiner hooks on the market. Different types of Carabiner hooks have different designs to adapt to different mountain climbing environments. Now let Kimjee share the gate types of carabiner hooks and their advantages and disadvantages.

Straight Gate Carabiner Hooks
Standard straight gate carabiner hooks are sturdy, durable, and easy to use. They are prevalent and can be used for many purposes. Carabiners with straight gates can be found on quick links and are often used for racks, such as cams and plugs. As the name suggests, they are entirely straight from the fulcrum to the end. Like most other types, they are spring-loaded, easily opened when pushed, but automatically closed when released.
Some straight gate carabiner hooks are also key lock mountaineering buckles. The key lock carabiner hooks have a smooth notch, and the nose of the carabiner hooks interacts with the door. This prevents the mountaineering buckle from catching your belt gear ring, bolt hook, and other slings, which can be very annoying. You may pay extra for this feature, but this is a good upgrade.
Pros: Durable and easy to use, Can be equipped with a key lock nose for free tailoring.
Cons: Heavier than line door
Bent Gate Carabiner hooks
These sturdy and durable doors are concave and can easily cut ropes; They usually retain rope ends for quick pull-out.
Like straight gate carabiner hooks, some bent gate carabiners hooks are also key lock mountaineering buckles.
The bent gate carabiner hooks usually have an asymmetric shape.
Pros: Easily cut rope, Durable, Keylock available for unobstructed tailoring
Cons: Heavier than line door
Wiregate Carabiner hooks
Wiregate carabiner hooks use a circle of stainless steel wire as the door, which reduces the overall weight and eliminates the need for additional parts in traditional doors. The wire gate design also allows for larger door openings. They are less likely to freeze in cold and humid weather than other door types.
Although the line door does not look as powerful as the traditional style, most are. In addition, due to the small mass of the gate itself, it is unlikely that the line gate will vibrate open in the event of a fall. (this is called door clearance. For more information about door clearance, see below.)
Pros: Light, Helps reduce gate clearance, Unlikely to freeze off
Cons: It May is not as durable as solid straight and curved doors
Locking Gate Carabiner hooks
Locking gate carabiner hooks can be locked in the closed position to provide additional protection against accidental opening of the door. They have a manual (also known as a screw lock) or automatic locking system.
Screwing the door requires the user to manually screw the sleeve onto the door to lock it.
Automatic locking carabiner hooks automatically lock when the door is closed.
The locking gate carabiner hooks are heavier than the non-locking model, but it is the only option for use with the protection/rope device. It would help if you also considered using them at protection stations and critical protection locations. They provide safer attachment and enhance your inner peace.
Pros: Lock the door to increase security
Cons: Heavier than other styles