These screwdrivers provide commonly used sizes in both straight-head and Philips-head. They are a great beginner set that will meet a wide variety of household needs. They are solidly made and are designed to last a long time. I have had these tools for several years, and they have exceeded my expectations in both performance and durability. I have used them for many do-it-yourself projects around the house as well as on a few jobs working for others. They had always done what I needed them to do. Craftsman is the only brand of screwdriver that I would buy; no other brand compares. One of the great benefits of these (and other Craftsman tools) is the life-time warranty. If these screwdrivers bend, twist, or break from normal usage, then they can be replaced free of charge at any store that sells the same Craftsman tool. Simply take the tool in and exchange it for a new one; no receipt is needed.