2-Pk. Portable Winch Co. Steel Locking Carabiners. For use with winches and other high-stress jobs. Supremely useful for attaching swing-side snatch blocks, slings, or rope end accessories. Details: Zinc-plated steel construction with anodized aluminum screw gate lock Minimum break strength is 5,500 lbs. Each measures 4 1/2 x 2 1/2" Gate opening is 1".