I have been using this set to fix grinders and sanders in my workshop. It`s a life-saver when I need to get back to work quickly. The kit comes with all the parts I need so that I don't have to go searching around town for replacements .These tools are durable and reliable which is important for any industrial and scientific environment. The only con is that the documentation could be a little clearer on how to install some parts. overall, a great set to have in any industrial electrical workspace..