The Petzl lightweight WILLIAM large-capacity asymmetrical carabiner is made of aluminium. 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, or the manual SCREW-LOCK. It can be used with the CAPTIV bar to favour positioning of the carabiner along the major axis, to limit the risk of it flipping and to keep it integrated with the device.

Pear shape offers a large capacity and wide opening facilitates connection of multiple items
Aluminium 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