Use 2 of these copies in three years to climb ... Do missions in France, Australia, Sweden and almost all climbing areas in Germany survived! From Toproben to Standplatzbau when Tradklettern or in sports routes they have all taken part perfectly. The only downside is that the screwdriver with the time not quite as smooth as initially works, but this is normal in my life experience. He is so wedged without reading again open by force I have not yet come across. Clearly an absolute price / performance hit.