I have been slowly building up a collection of filters to fit the lenses that were included in my camera kits. I am very much an amateur/enthusiast and I'm still learning, so I learn a lot from researching photography websites as well as reading the reviews of more experienced photographers that have purchased the filters I am considering. I have a few single filters from K&F Concept and have been more than happy with the quality and ease of use. I only recently became aware of magnetic lens filters and was looking at some right around Christmas (as a present for myself). I ended up delaying my purchase because I had a hard time deciding which assortment of lenses would be best for me, and I also wasn't sure how well the magnets would hold the filters in place, I ended up delaying my purchase. I'm glad I did, because this set of ND lens filters will be perfect as I am just getting started in trying to get good pictures of the setting and rising sun as well as interesting cloud formations. I was especially interested in the gradient filter, but I will be using all of them. The quality of the glass and coatings is excellent and once I figured out the adapter ring, I found it very easy to install and use these filters. At first glance, I thought I didn't receive everything I was supposed to -- but as another reviewer mentioned, the ring is already attached to one of the filters. The ring is thin and light and goes onto my lens very easily. The magnets are surprisingly strong and I have no worries about the filters coming off. It is so quick and easy to change filters. I also like the wallet; it is sturdy with a zipper closure plus a magnetic closure. It unfolds accordion style and there is a padded pocket for each filter. It has a ring so it can be attached to my backpack, and there is also a loop on the back so it can be attached to a belt. The lens kit did seem a bit pricey at first, but now I think it is well worth the cost.