"I bought these when they were on a special discounted price, so that needs to be born in mind.
These are quite a decent set of drills, though of course there are others out there of higher quality - and price. And I've used many over the years that were no where near as good and more expensive than the full price equivalent of these.
The set offers a good variety of sizes and lengths, and plenty of each type. I am unlikely to need to buy any for quite some time. If ever.
I did manage to turn one into a mushroom shape, so if you are drilling into reinforced conrete, and SDS drill is needed. Into brick, stone and path mix concrete, then these should do you just fine.
I'm not sure that I would buy them at full price because in all honesty I don't need that many, but even then they are reasonably good value."