CHOUINARD Carabiner 2100kg Made in USA I bought this for a keychain, but it was too big, so I didn't use it and stored it for a long time. [I only attached it to my jeans belt loop a few times.] I haven't used it for climbing. The purchase date is unknown, but it's an old item. Please consider the aging and refrain from using it for actual climbing; purchase it as a collectible.