The filters come with a good cover to protect them from bumps etc, and for the price you can't ask for anything else,
I am satisfied with them

Even though the screw-on solution is a bit tricky and it is unusual not to find a rotary lever for the polarizing filter, all filters work excellently on my D7000. I can't detect any aberrations, distortions, etc. That's all I need. The original polarizing filter from Nikon costs, for example, ALONE already about 150 euros, I have discovered nothing that can better. The brush is ingenious (just pull off the cap on the back and then pull the rubber stamp (not at the end)). The small bag is ebefalls super, so at least the parts do not fly, as usual, in breakage-prone hard plastic boxes in the photo bag around. I find the set as it is completely class. It would be better only with ner instructions, the manufacturer / seller probably assumes that all know what they have there, but is not true, a small note with a few tips on how it works or-. is handled (manual) would certainly silence many critics. When I read the reviews here, a manual is really missing, although everything is logical and easy. Apparently some do not even know what for and how to use the filters.

I would not follow the tip to use the UV filter as a lens protector (at least with digital cameras). These filters also have disadvantages with digital cameras, they can reduce the performance of the lenses under some conditions, modern lenses already have UV protection at the factory, double is not always better. The front lens is better protected with a sunshade.

Super is already the price-performance ratio: Three filters for this price!
The UV filter is actually more for protection. The polarizing filter I tried briefly and it seems to work well. The actual test comes in the mountains, when the haze should be faded out. I hope he then keeps up with other, more expensive.
I used gray filters many years ago with Super 8, but not yet in photography. This will be new territory, although yes this filter is not that dense.
I'll add to the review in due course - if anything distinctive comes up.

As an "amateur photographer" I wanted to look into different filters and I must say that this set helped me a lot to choose the right filter for appropriate lighting conditions.
The brush is great for cleaning, both the filters and the lens.
The included pouch is also very helpful for keeping the unused filters safe.

Very satisfied, thank you.

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First of all I would like to note that I give the evaluation only as a layman and "classic" Vacation photographer.

I mainly use the CPL filter on a Nikon D3200 with a simple AF-S DX 18-55 VR lens for landscape photography during various vacations. The UV filter also does its job as desired. For my private purposes, I am 100% satisfied with the filter set. Side effects such as distortion, etc... I could not see any.

Absolutely recommended. Would not have thought that you get something reasonable for this price, but you can also deceive yourself. The filters as well as the bag are top processed without defects or inclusions in the optics. The CPL filter can be turned cleanly without scratching, and reliably eliminates reflections.

Can recommend this set to any hobbyist without hesitation.

I have other K+F filters for other lenses and they have been exceptional. I ordered this duo for the Sigma APS-C 18-50mm F2.8 zoom I use on my Sony A6000. When I stack both filters together, there are severe black corners. When I zoom from 18 mm to 19.5 mm, they are gone. If I use one filter at a time, no problem. So I decided to leave the polarizer on for the summer and reinstall the UV in the fall. Unless I plan to shoot 20-50mm on a given day. These filter rims are so thin that I don't think there is anything on the market that could improve this situation. I have put K&F on other lenses with no problems. Must be just this Sigma lens design.

Very easy to use, attach and remove, improves image quality in the right environment