Make of highly strength stainsless steel, corrosions and rusts resistance, sturdys and stable, strong pulling force. The carabiner have a threaded sleeve aboves gate, nonslip, easy to lock. Lock mechanism and small functional feature with small size allows for single hand operate. Climbing carabiner issmall, to use, and can attachs to the backpacks / handbag. Can used to fix dog chain, swing, hammocks, also suitable for fighting, outdoor training, rock climbing, highly operates, and engineering protections.