DMM Ultra O Durolock Carabiner
Best secure connector for critical rigging applications.
This is the ultimate choice for rigging systems where security is non-negotiable. The symmetrical shape keeps your gear perfectly centered, while the complex four-stage locking mechanism eliminates any chance of accidental opening. It’s undeniably fiddly to operate, but that extra friction is exactly what you want when safety is the priority.
$57.49
at
Arbsession
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Who it's for
- Climbers and riggers prioritizing maximum safety in critical systems.
- Riggers and rescuers needing balanced loading and pulley compatibility.
- Professionals and enthusiasts seeking durable, high-performance hardware.
Who should skip it
- Climbers needing rapid one-handed gate manipulation.
- Budget-conscious users looking for basic locking carabiners.
- New users or those accustomed to simpler locking gates.
Performance breakdown
Security Reliability
The four-operation Durolock mechanism virtually eliminates accidental gate openings.
Weight Efficiency
Remarkably light for a full-strength, auto-locking oval carabiner.
Component Centering
Symmetrical basket geometry keeps pulleys and webbing perfectly aligned under load.
Snag Resistance
Clean nose design prevents frustrating hangups on ropes and gear loops.
Handling Ease
Complex locking mechanism requires deliberate focus, sacrificing speed for maximum safety.
Structural Integrity
Robust 25kN major axis rating provides confidence in demanding rigging scenarios.
Key Specs
Brand
DMM
Model
Ultra O Durolock
MPN
A324
Major Axis Strength
25kN
Minor Axis Strength
12kN
Gate Open Strength
7kN
Dimensions
63 x 109mm
Weight
74g
Gate Opening
20mm
Conformance
EN 362:2004 B, EN 12275:2013 B
Know before you buy
Still have a question?
Ask Metto anything about the DMM Ultra O Durolock Carabiner before you decide.
