Obviously not the best drum-mics in the world, but for the money they're very decent and should suit any project studio's needs perfectly.
The mic clips are rather flimsy and I imagine they'll have to be replaced sooner rather than later, but it isn't a big deal.
The mics come in a really nice sturdy case with storage for mic cables which are provided, but not the best quality. That being said most other manufacturers wouldn't even consider providing anything in the way of 'free' to their customers, and seven free mic cables are better than zero free nothing!
Overall it's the best quality you're going to get without paying double the price and even then you'd have to have pretty decent treatment and a good ear to notice the difference.
Also, Superlux have a tendency to make music equipment that shouldn't sound anywhere near as good as it does for the price, and for the price you're paying you're getting a Lot!