Fusion Climb Ovatti Steel Auto Lock Oval-shaped Carabiner Alloy Steel, Ultra light-weight, Oval-shaped Ideal for Pulleys Auto-locking gate Outer Dim: 4.3" H x 2.4" W , Gate Opening: 0.75"/ 19mm, Wt: 6.70oz, Impressive Strength Rating: 27 KN (MBS) Meets ANSI Z 359.1 standards