quality. They're expensive but honestly you get what you pay for, especially when it comes to the tools! I work as a contractor and use a variety of tools on a daily basis, the client has never let me down. This is no exception, you can't always get a driver in a confined space, but this allows you to. I even use this when it's not tight simply because it's so easy to use with one hand. The bits are non-magnetic but can be easily swapped out if needed. All in all a great addition to any tool bag!