I have the knife for my electric mower. Rotak 34 buy - and have to say that it does not fit. I have noticed that it is not for the battery mowers and yet it does not fit, because there is a 3rd Rotak 34 model. I am angry, because before I knew it, the package was opened. Since the product description no further designation was given, at least not one that was on the mower, it was not apparent to me that the knife is intended for a different mower. So please use the products better identification. The star therefore relate to the designation of the product, the quality I can not say