Omega Pacific Carabiner Oval, Screw Locking - Bright, USA Made, ISO Cold Forged Aircraft Aluminum Alloy for Climbing, Safety, Rescue, Industrial, and Arborist Uses STRENGTH - Major Axis 22 Kn (4945 lbs), Minor Axis 8 kn (1800 Lbs), Gate Open 6 kn (1350 Lbs) DIMENSIONS - Gate Opening 13mm, Weight 71 gm BENEFIT - Rope Friendly True Radii (No Flat Spots) all rope bearing surfaces CERTIFICATION - CE and ISO 9000 Certified (2015) TESTING - Each Carabiner Proof Load Tested To 50% of Rated Strength