IĀ ordered two packs and found while most of the rings opened with only a little effort, others IĀ struggled with. IĀ had to use pliers to Open several as the metal was warped slightly making it very difficult to open by hand. Three IĀ failed to be open at all, even after half an hour of trying. Left me with a bruised thumb and mildly frustratedā¦they do they job mostly, with some struggle.