PETZL - Omni, Semi-Circle Carabiner for Climbing Harnesses INTENDED USE: The OMNI carabiner's half-moon shape is used to close harnesses with two attachment points. SIZE AND STRENGTH: This midsized carabiner (22 mm gate) is designed to be loaded on all three axes and has a strength of 15 kN. EASY TO USE: The semi-circle shape is easy to open and attach to your harness. LOCKING SYSTEMS: Choose between two locking systems: the manual Screw-Lock or the automatic Triact-Lock. NO MORE SNAGGING: Petzl's Keylock system helps avoid accidentally snagging your carabiner on your gear.