After my wife had suffered a fracture of the wrist kompliezierten after a fall had great difficulty opening bottles and cans vorhanden.Die problems were mostly with the help (if available) is dissolved or with pliers and other tools but with .then we Schmerzen.Nachdem had found solutions for glasses, we came across the anti-slip bottle opener: he was appointed and after a few attempts the opening of glass bottles and the most PET bottles works well, except for a few light bottles from cheap markets, the bottles then between the knees be taken, but what then often leads to wet clothes. Conclusion: the part is great for glass bottles and stable PET bottles (lightweight bottles should be opened by a second person, or you do not buy!