I've only had the cross shaft a few months so the filter had to be changed for the first time. I was afraid I would be scammed with one that fits and works perfectly as I read some not so positive reviews. I only ordered one in case it wasn't of good quality and the only thing I noticed after the first use was that it was already dirty, the one that came with my Crosswave only became after a few uses. So that's my only "complaint/concern" regarding the quality of this filter. I don't know if it's a good thing that it gets dirty so quickly or not. In addition, it is of very durable quality and fits well.