This is a very good tool for loosening stuck nuts. I've had it for several years and it has never failed a job. I don't know about really big trucks or other big vehicles, but it's spot on for most cars. It has 2 reversible sockets for 4 different sizes and a convenient storage bag. This tool is MUCH easier to save and use than any of the four methods. The only thing I don't like is that the handle rotates when extended, making it a two-handed job to put it on the nut. It seems strong enough because it looks like new after many tire changes, some of which have had to step on the button to get those super-tight nuts to move. Get one for any car at a good price and when you need it you will be glad to have it.