Locking System

Locking carabiners can have either manual locking or auto-locking systems. Manual systems (SCREW-LOCK) require the user to screw the sleeve on the gate to lock it.
They are great for carabiners that are opened and closed only occasionally, like the central carabiner at a belay station. Manual systems are recommended for use in gritty environments, where dust and dirt could cause auto-locking mechanisms to malfunction.

With auto-locking systems (BALL-LOCK, TRIACT-LOCK, TWIST-LOCK) the gate locks automatically, an advantage for carabiners that are opened and closed frequently, like the carabiner that connects a belay/rappel device to a harness.
 

SCREW-LOCK
Manual screw gate locking system

• The red band provides a visual warning when the carabiner is unlocked
• Excels in gritty environments, where other systems may jam
• Available on the Am’D, WILLIAM, ATTACHE, ATTACHE 3D, LOCKER, OMNI and OK models
  
  
   

BALL-LOCK
Auto-locking system with lock indicator

• The green button indicates when the gate is locked
• Resists accidental opening when locked
• Easily opened with one hand
• Available on Am’D and WILLIAM models

TRIACT-LOCK
Auto-locking system

• Easy to use, even when wearing gloves.
• Resists accidental opening when locked.
• Available on the Am’D, WILLIAM, OMNI and OK models.

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Carabiner shapes

Petzl carabiners come in three main shapes, each one is designed for a specific purpose:

Asymmetrical shape:
For connecting belay/rappel devices or for use at the end of a lanyard.



Pear-shaped:
Best for anchoring several ropes, slings or other devices and for use with the Munter hitch.



Symmetric shape:
To attach belay devices, pulleys, or other equipment. The form helps to prevent shifting when loaded