When deciding to buy a box spanner set, you should consider a lot of factors, including the ideal size and the level of quality. If the wrong tool is used, there is a chance that the nuts will be damaged. Wrenches are the most common type of tool used for loosening and tightening fasteners like nuts and bolts. There are a number of different kinds of box spanner, each of which is ideally suited to carry out its function for working with nuts and bolts of varying sizes. Because there are so many online options, the vast majority of people have difficulty selecting the best spanner.