An 82mm polarization filter from the K&F Concept brand from the Nano-X PRO series is supplied.
Overall, I find the presentation very valuable, appealing and goes for me in the PRO area - the price too ;-).

The unboxing was a WOW! experience for me. A filter that puts a smile on your face when you unpack it has to be good -

..and it is.
I think the filter is really great! It is well made, makes a high-quality impression, can be easily screwed onto the Tamron 24-70mm 2.8f G2, the imaging performance is great and I don't see any dark spots, "ghosting" or the like at the edges (as with some other cheaper manufacturers /products). The reflections can already be taken out when taking pictures, which in turn reduces the tedious post-processing.

I left the scratch test at this point, after all I want to use the good glass with maximum performance ;) I don't need a scratch on it for the time being, it will inevitably come by itself at some point. Now to the one catch

:
The packaging, i.e. the transport box, is not 100% mine - why? Because I'm more of a hard-shell type, where I can put the filter. Nicely laid out in itself, but not quite as practical for me personally.

Conclusion:
for me, the polarizing filter is a great choice. Certainly not a snapper at first glance, but you also get a high-quality product for such a price. I have already mentioned the weakness with the case mentioned above. It's not really my thing, but ultimately it's also a matter of taste.
In the end, what counts is the quality of the polarizing filter, and it's great!