Austrialpin 10 mm Non-Locking Steel Oval. If ever you were thinking,Bro, Im told thats how climbers talk these days,Bro, these non lockers are sweet, but theyre too light, and their steel content is, like, way too low. Well, if ever you thought that rejoice. Austiralpin has made a galvanized steel non-locking carabiner. This biner is perfect for settling up slacklines, or other applications that where locking isnt crucial, and high abrasion resistance or strength would be handy.