Until I realized what kind of tools like a sword-lerk are there . I need to figure it out, it’s still an incomprehensible thing - some kind of nozzle with a thickening with a small stroke. It doesn’t look like a very reliable ratchet screwdriver, but so far it works. I can’t say for durability - I just bought it so far. Time will show. Different pros: The quality is top notch. Not elite, but 4.5 points out of 5. All bits and other tools sit well in their sockets. Its cons: There is no battery in the flashlight and no instructions at all.