These are brilliant looking key-caps with a great quality feel to them, they look excellent off a keyboard as well as on one. The plastic feels like it's made from a good quality and much smoother to the touch than I expected, something for me to get used to.
This product loses a star due to two things; an imperfection caused by molding and the packaging.
There are visible white marks and chunks on a number of the key-caps caused by what I assume to be the breaking/snapping of the key-cap out of their molds. If you've ever stretched/broken a plastic tab on a plastic model kit before, you will have seen the sort of damage I am referring to. A good number of the keys as a result have various sizes of small chunks taken out of them by this process. It's a small detail that you only notice holding the keys and looking at them. Thankfully though it's not noticeable on your keyboard, but it's a detail you certainly notice when you spend roughly $1.25usd per key-cap.
The other reason I deducted a star is the packaging. These came crammed in a small plastic zip lock bag. Again, it's a nitpick but this TKL set (plus the extras bought in another drop) cost around the same as a GMK drop I purchased. The difference is that came delivered in a cardboard sleeve with the caps kept in a plastic shell.
Below is a picture of the set on a Massdrop CTRL, a blue key with some of the worst damage and a black one with the average result I saw from the molding process.
Overall, a brilliantly designed key-cap set with a definite feel of quality to them, just don't expect perfection on the molding and packaging.