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The Petzl WILLIAM is a large pear-shaped locking carabiner ideal for belay stations and multi-use rigging. Its high-capacity design, Keylock system, and ergonomic shape make it perfect for Munter hitch belaying and complex anchor setups.
The Petzl WILLIAM is a large-capacity, asymmetrical pear-shaped aluminum locking carabiner designed for belay stations, multi-anchor setups, and belaying with a Munter hitch. Its generous internal volume makes it easy to connect multiple devices, slings, or rope systems while maintaining smooth, reliable handling.
The ergonomic shape is optimized for use with gloves, and the Keylock system prevents snagging during clipping and unclipping. Its asymmetrical design improves orientation and makes the locking system easier to operate in demanding environments.
Available with either a manual SCREW-LOCK for occasional or dirty conditions, or an automatic BALL-LOCK for frequent, high-security use, the WILLIAM adapts to a wide range of climbing and professional applications.
Large internal space accommodates multiple connections
Ideal for belay stations, rigging, and complex anchor systems
Optimized shape for Munter hitch belaying
Designed for easy use with gloves
Asymmetrical pear shape improves orientation and usability
Keylock nose prevents snagging on ropes and gear
SCREW-LOCK: simple manual locking, ideal for occasional or dirty environments
BALL-LOCK: automatic triple-action locking for frequent and secure use
| Feature | Specification |
|---|---|
| Material | Aluminum |
| Major Axis Strength | 27 kN |
| Minor Axis Strength | 8 kN |
| Open Gate Strength | 8 kN |
| Gate Opening | 27–28 mm |
| Certification(s) | CE EN 12275, CE EN 362, UIAA, EAC, NFPA 2500 Technical Use |
| Model | Locking System | Weight | Type |
|---|---|---|---|
| M36A SL | Screw-Lock | 85 g | B, H |
| M36A BL | Ball-Lock | 90 g | B, H |
3-year manufacturer warranty.
