The quality of the key caps is superb for the price. The PBT plastic has a matte surface that is comfortable to type on. I used the set on my Cooler Master CK550 with the UK layout and had no issues swapping the caps with the included plastic puller. The key caps have a small plastic dot on their top side which is a result of the molding and is not obstructive at all. The light spill is sufficient and is an improvement over the original ABS key caps. Overall, I'm very satisfied with this product.
Was expected, came well packaged and fit just right. Was 100% in my HyperX elite RGB. A cool difference. Arrived well before time also.