This set of five concrete drill bits from Drill America is great for working in concrete or brick. We used them to install new fence posts on our concrete porch and install railings on our cement stairs on the two doors leading to our tiled backyard. These beats really nailed it. They are designed to be used with an SDS impact drill, not a conventional drill. They come in a pouch with nice big tags to make it easy to choose the right attachment. The pouch is a bit flimsy for holding such sharp tools, but it's actually a definitely solid piece, so I won't give it a point. Sharp and durable, these bits are designed for concrete, brick or masonry without rebar. You are excellent.