Fusion Essence Modified D Shape Aluminum Auto Locking Carabiner Aluminum, Modified D-Shape, Light-weight Auto-Locking spring loaded gate Outer Dim: 4.38" H x 2.95" W, Gate Opening: 0.875"/ 22mm, Wt: 3.2oz, Strength: 28KN (MBS) Perfect for all climbing and tactical uses Meets ANSI Z 359.1-92, UIAA standards, All carabiners proof-tested to 3600 lbs