Caveat: I have ordered the pliers on Saturday at 23 (!!!) clock and on Monday morning they came to. So a fast delivery I've never experienced, especially not on a Sunday! To clamp to be I can not say all too much, since my matching Jersey pushbuttons are still missing. However, I can not understand the very poor reviews here. The supplied inserts keep with me without problems. Clear you can be even without the press "tool" out again, but fall out on their own they do not. In some reviews it says that the buttons are attached or deformed wrong with the pliers. To this end, I can only say that I have a (known) other pliers for plastic snaps and this experience had made the need for a bit of exercise. The forceps should therefore only be tested properly and to ensure that the problem is not with a self. Whether that is the case / can not judge, I was, of course. All in all I have to say I am in various Nähforen and groups active and there are actually almost all satisfied with the pliers! I like to report back if my jersey buttons are there, and I have tested it I prefer a star off because I without having, itself extensively tested, can be no full "Star Number".