What are you Hoping to use it for? I used the Ring Open attaching my swiveled bulldog bone directly to my bridge. I dinne remember what the lock was, but it was secure and had good indicators for loosening if that were to happen. Should be able to email petzl for the recommended lock method
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.