Trying to find the right razor blade with ones razor can be quite a daunting tasks especially sometimes one might want to change the unit. Yet with URB that confusion will be eliminated. URB will be a blade that fits all different types of razors by bending or pulling around the razor head. You want have to worry about an unwanted collections of razor blades with URB because that one will actually fit. URB, for life is tough enough to get around without adding finding that finding the right razor blade.