I used the screwdriver function a couple of times, it's convenient. The extension cord is good, without a magnet. Convenient storage format compared to the box, nothing will crumble. In such a convenient format, I want a more versatile set, albeit more expensive. Pros below: Strongly assembled, can be used as a screwdriver, quality bits. Has some cons: Bits could be more diverse, a simple set. In the set, they are simply duplicated short and long. A very rigid revolver, because of this rigidity it is difficult to turn exactly into the hole.