Quality filters
I’ve purchased a range of magnetic and screw-on ND and CPL filters for different lenses, and been really really happy with all of them. I have tried other brands at the same price point and found the quality to be lacking. K&F Concept filters however are excellent - very well made, fit reliable and perform really well. You could spend more, definitely, but I’m not sure you’d get anything better. Very happy, K&F Concept will be my go-to from now on.