Because the mower remains in wind and weather outside, the wear of the blade is only a matter of time. Therefore, I had ordered this replacement "knife", but can satisfy me in any way. Although they fit, but are so dull that they are not to be used without sanding. In its delivered state, they must be compared roughly with the thread of an edge trimmer (functional).
Conclusion: Compared to the original, unfortunately, a big difference in quality.
