I have these blades used for more than ten days at a three-time shaving. I have these blades attached to a quite elderly Venus handpiece, which succeeded without problems. I am very pleasantly surprised by this blade. In the meantime, I avoided three blades of No Name Company. A comparison is actually just barely possible because these blade Venus play in another league. The shaving is thoroughly already on your first stroke. I particularly like the sachet, which straighten the hair and skin gently massaged. By pillows, a certain safe distance from the skin comes into being. Thus, I have also been injured in any shaving. The version Sensitive smells good and feels very soft when on the skin to slide. The 4 x 5-way blades have a very long shelf life, so I think the price okay.