In Stock

Petzl William Carabiner

The lightweight WILLIAM large-capacity asymmetrical carabiner is made of aluminum. It has a pear shape that is practical for easily connecting multiple items. Its fluid interior design and Keylock system facilitate handling. The WILLIAM carabiner is available in three locking systems: automatic TRIACT-LOCK or BALL-LOCK system, or the manual SCREW-LOCK system. WILLIAM can be connected to the CAPTIV bar to favor positioning of the carabiner along the major axis, to limit the risk of it flipping and to keep it integrated with the device.

Product price
Additional options total:
Order total:


Pear shape offers a large capacity and wide opening:

  • -facilitates connection of multiple items
  • allows a Munter hitch to be easily created in case of retreat

Aluminum carabiner is light, reducing the weight of equipment the worker at height needs to carry

Easier handling:

  • fluid interior design limits the risk of having a catch point and facilitates rotation of the carabiner
  • Keylock system to avoid any involuntary snagging of the carabiner

H-shaped cross-section:

  • ensures an improved strength-to-weight ratio
  • protects markings from abrasion

Available in three different locking systems:

  • TRIACT-LOCK: automatic locking with triple-action gate opening
  • BALL-LOCK: automatic locking with triple-action gate opening, with lock indicator
  • SCREW-LOCK: the manual screw-lock with red band provides a visual warning when the carabiner is unlocked


  • Major axis strength: 27kN
  • Minor axis strength: 8kN
  • Open gate strength: 8kN
  • Gate Opening:
    • Triact-Lock: 27mm
    • Screw-Lock: 28mm
    • Ball-Lock: 27mm
  • Weight:
    • Triact-Lock: 90g
    • Screw-Lock: 85g
    • Ball-Lock: 90g
  • Material(s): aluminum


  • CE EN 362
  • EAC
  • NFPA 1983 Technical Use

Additional information

Locking Mechanism

Ball-Lock, Screw-Lock, Triact-Lock


Black, Grey, Gold