I bought this tool set for my grandson to repair and assemble electronic devices. I try to avoid made in China items but I have to admit this tool set is very decent quality and superb breadth of tools for the low price of twenty bucks. The 5.5mm socket was exactly the right size for a radio controlled car kit he was upgrading. The flex driver extension also was handy to reach into 90 degree fittings. The entire kit has the very small size of driver heads you will not find at most hardware stores: hex, Torx, square, slot, Phillips, socket, etc. Some are so so small they work for watch repair! Pretty much a perfect tool set for working on any electronics from watches to radio-controlled vehicles/aircraft, and computers.Obviously you won't be reefing on these tools or bits with tremendous torque, but the machining is well done and all the surfaces look well executed, even and clean. The bits fit into the driver securely and are the same 1/4" hex stem as used in larger power tools and drivers. So one can easily add more specialty bits as needed from a multitude of sources. I liked that it included a magnetizer/de-magnetizer. It is very handy to have a magnetic tip to hold tiny screws or nuts in place, but it is great to have the option to remove the magnetism as needed, especially around electronics and memory chips.