I've got a shield with Durability +130%, which I think exceeds the old cap for this property - the old prefix, Indestructible, was converted to 120% as far as I remember. Correct me if I'm wrong. So +130% should make it close to impossible to damage?!? And what is the new cap? This also made me wonder, what does this property actually do? Do items with Durability + x% loose durability in a slower pace than items without? And if that's it, isn't this property obsolete, now we got Powder of Fortifying, not to mention Self Repair?