BEIFENG 25KN Auto Locking Carabiner - UIAA Certified Heavy Duty Climbing Carabiners for Rock Climbing, Camping, Rappelling, Hunting, Rescue Equipment - Professional Carabiner Clips (4-Pack, Black)

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 instant...