Got this so I didn’t have to use step down filters for one of my long lenses. It seems to be well enough made and similar to the Nano X series of their filter line. For the price I think it’s good, but it does have some differences compared to my way more expensive Hoya polarizer.

PRO’s
-comes with a nice kit and carrying case. Good for putting other filters in.
-lens cap is great and replaced one of my older ones that broke recently.
-optically seems pretty good especially for the price.
-mechanically equivalent to the Nano X version of the filter I also have. Nearly identical build quality.

CON’s:
-compared to my Hoya, it does have a slightly more green cast to it. However, considering the Hoya is nearly 3x more expensive I’m not sure it’s quite worth the price difference unless you’re absolutely nitpicking color tones. Besides which, if you use Lightroom or something you can easily make the adjustment, and if you’re that picky about color out of the camera then you should only be looking at professional level glass anyway.
-the filter is slim so getting it off can be a lot trickier than my Hoya and B+W filters for some reason. I don’t know if it’s the coating on the threads or what but they are definitely sticky.
-not sure if it’s a con yet but just something to note: the outer coating on this has a purple tint as opposed to the Nano X version which has a green tint. Probably just has to do with the amount/quality of the multi coatings between the filters.

Overall it seems to do the job. I will update after some field tests if something stands out as wrong.