The Kong Tango carabiner is a lightweight aluminum double-action carabiner with a unique locking device that requires a deliberate single-handed grip to open. Simply depress the lever with your palm while gripping the carabiner and the gate unlocks to open. When released, the gate locks automatically for security. Overall length 5.4" (136 mm). Gate opening 1" (2.5 mm). Blue anodized finish. Made in Italy. Three available.