Omega Pacific Carabiner D, Screw Locking, USA Made, ISO Cold Forged Aircraft Aluminum Alloy for Climbing, Safety, Rescue, Industrial, and Arborist Uses STRENGTH - Major Axis 31 Kn (6970 lbs), Minor Axis 9 Kn (2025 Lbs, Gate Open 9 Kn (2025 Lbs) DIMENSIONS - Gate Opening 16mm, Weight 74 gm Each 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