WIDE APPLICATION: The maximum load capacity is 25KN, this locking carabiner is designed for climbing, hiking, rappelling, rescue, locking large adult dogs, etc. AUTOMATIC LOCKING: The carabiner features a spring-loaded shutter that allows them to be quickly and securely attached to a wide range of attachment points. PREMIUM MATERIAL: The carabiner clips are made of high-quality aluminum and magnesium alloy. They are waterproof, wear-resistant, high-strength, and durable. Quality Carabiner: Very smooth locking surface and gate, so new users don't have to worry about blisters or scratches if they are not used to the carabiner. GUARANTEE: If you are not satisfied with our product you received, you can send emails to us at any time. We will reply you instantly and help you solve your problem.