Material: The climbing carabiner is made of aviation-grade aluminum, which is light and strong. The surface oxide layer and baking varnish are non-toxic and harmless, the lateral load is 7kN, and the longitudinal strength is 25KN. Equivalent to 5621lb. Size: D-shaped carabiner is only 3.9" high and 2.4" wide, ideal for one-handed operation, Lightweight 7075 aerospace aluminum with a net weight of only 2.1 oz/piece, reducing your load. Easy to use: Hold the carabiner in your hand, twist the 1/4 barrel with your index finger and thumb, and push inward to open the carabiner. When you release your hand, the carabiner will automatically lock instantly. Wide range of uses: this carabiner is very suitable for rock climbing, hiking, rope descent, rescue, locking large adult dogs, etc., and the black coating will not reflect the sun to distract your attention. Buy with confidence: Carabiner has obtained UIAA international certification. At the same time, we provide a 30-day return and exchange service without any reason. You can buy and use it with confidence.