DMM Ultra O Durolock Carabiner

The Durolock uses a patented four-way locking gate that requires a specific sequence of actions to open. This design significantly reduces the risk of accidental opening compared to simpler locking mechanisms, making it much more secure for high-stakes environments.

Yes, despite the complex four-way locking mechanism, the Durolock is engineered to remain operable with one hand. It balances high-security locking with the practical need for efficiency during demanding operations.

The symmetrical oval shape is ideal for complex rigging because it allows for multiple connections without the carabiner shifting or rotating unexpectedly. The round basket design ensures that your gear self-centers under load, keeping your system stable and predictable.

Absolutely. The Durolock is specifically designed to provide extra security in scenarios involving moving ropes, where vibrations or friction might otherwise cause a standard gate to accidentally unlock or open.

The carabiner has a major axis strength of 25 kN, which is standard for high-strength aluminum connectors used in professional and technical climbing applications.

This carabiner weighs 136 grams. While it is slightly heavier than non-locking or basic locking carabiners, the added weight is a trade-off for the increased security and specialized locking mechanism.