As a general contractor, I use a lot of drill bits. This set is well rated. I agree with one reviewer that small ones break easily. But then again, I've never seen a smaller bit that wouldn't break if you didn't hold the drill straight. I've tried more expensive bits and they last longer but wear out over time. For the money these are my favorites. My only criticism of titanium coated bits is that they are difficult to sharpen with the Drill Doctor. I also like the drill index and carrying case. As long as I carefully put them back they are always where they should be. I also like the choice of sizes. Most small kits don't come with 1/2" bits.