This is the industry-leading, half-inch, steel D on the market. Known as “Style 5″, here, its MBS rating of 72kN exceeds every standard it’s built for and is popular among firefighters and professionals, alike, thanks to its new, Third-Party-Issue ANSI and CSA Certification! Still the strongest Standard 1/2″ Steel D, now available with a keylock nose. Heat-treated, half-load tested (over 8000 lbf.) and built to exacting standards, the ½” Large D is one very fine steel carabiner. Made in the U.S.A.