The DMM Ultra O is a classic climbing carabiner trusted by professionals and amateurs around the world. Now the Ultra O has been coupled with DMM’s patented Durolock design to provide a safe and easy quadruple-action auto-locking ability to minimize the chances of accidental gate opening and maximize security. Sophisticated yet functional, the gate is operable with one hand. The oval shape of the Ultra O facilitates multiple connections and the round basket allows any of the connections to self-center when weighted.

Breaking Strength:

25 kN Major Axis
12 kN Minor Axis
7 kN Gate Open
Gate Opening: 0.79 in
Weight: 2.61 oz