Unfortunately, the quality of the supplied set is rudimentary at the level of the socket wrench set. As one of my Vorrezensenten already wrote are the keys considerably "softer" material. The keys have excessive play already in unused multi-tooth screw heads. In contrast, I see the sentence not as a "household fit" to whatever you like including understanding. You can quickly acquire even faster trouble as you may initially think. At least in the field of metal and vehicle that's true.
The price is quite cheap, but nothing helps me when I'm doing a useless screw head and the screw must then boring, and it destroys me the tool. My rate is declining.
My conclusion: For screws in wood nor is it very useful in the use of moped, car and Co rather unsuitable