Firstly, a very good delivery, nicely packaged. The filters were already in the pouch bag that is made of sturdy material and there is room for 4 filters, so you even have an extra place.
The UV filter:
sturdy metal ring, feels good and sturdy. I think it can take a beating too. Rotates easily on the lens and provides no problem for the lens hood and lens cap.
The gray filter:
Fairly strong neutral density filter, you can also see from the filter itself (you can barely see through it once placed on your lens). Shutter speed goes straight to 1/5 in a well-lit room, but less light comes in, making it ideal for photos of, for example, flowing water.
The polarizing filter:
Compact ring (without a protruding pin to adjust the filter, but in this case by turning a second disc of the filter).
In the beginning it takes some getting used to during manual focusing.
An ideal purchase for any beginner who wants to experiment with filters and who wants to immediately get solid material for a small price.