This metric set is fairly well rounded as many standard sizes are required. They're carbon steel, so they're a little better than the cheap ones, but they're not titanium. I have had this set for over a year now and use it very often. They've held back pretty well and it looks like they're succeeding. The worst thing about this set is the case itself. Latches break after opening and closing several times. It's cheap plastic. The bits themselves fit easily in the case, and the case holds the bits well once you've put them in. If you buy them at full price, the case sucks and you freak out. Catching them on sale really helps sort things out. Much luck!