... Simply good blades. The Mach 3 was the first system shaver, who convinced me completely, because before I took a long time razor because me the simple two and three-Klinger Syteme mostly not convinced. ContourGlobal and Contact aside times, life derten me but also not convinced. These blades were here for the original blade Mach 3, no copies, but they often get in the bay. Great quality and super life for many gentle shaves. My Recommendation.