I have the Petzl carabiner for several months in operation. Primarily intended use: security cable stand. Particularly outstanding feature: the color coding, which is visible only when the carabiner is not secured by the screw against opening. This is with a view obviously a source of danger. And sometimes it just has to go too fast ...
This simple security feature I found so good that I have my other Schraubkarabinern missed the colored ring with Edding. Inexplicably to me is that this form of security increase standard is not - not even at Petzl.
