That's good, I've usually found the flat ones made with sheet metal are weaker and more bendable than ones made from steel wire, or just using the small sized paper clips. Which is problematic because I like to keep them in my bag in case I need to use them and if they end up bent up it's not great.

I think the reason the ones I've gotten fared so poorly is because they're aluminium as opposed to steel like the paper clips. Which always fair better in my bag than the flat stamped ones do.