At this price range the built quality of this product is good. It's a compact & so necessary equipment for landscape for beginner & ameture photographer. Overall it's a good except the filter holder. The filter holder is made of plastic & can be easily broken. The adpater rings are good & made of metal. The filters are made of special kind of plastic fibre & quality is not so bad. You'll provided 9 adapter rings starting with 49mm to 82mm so you have a lot of options. Overall it's a compact & value for money product. Later I'll update images & can provide practical review on it.
First of all, filter material is not glass (on this price, what are you expecting?) This is plastic and got scratch easily while cleaningit up. I think, the filter frame should be in metal. it is hard plastic. So you should take care of it. I clicked some long exposure pics through it and i couldnt get very clear images (even after post editing).