I bought it for my own car DIY purpose. We are demonstrating usability in narrow space such as engine room. Also, in addition to + - - Hexagon, in addition to the main size of Torx has become a set is a perfect item for car frenzy. Each is color-coded, it is kind designing that it is made up to size notation. All this, this price is perfect. Although it can not be evaluated up to durability on the basis of the aeration period, it has a feeling that it is a firm build considerably for the price. Tightening, switching in loosening direction also works without stress. I think that it is an excellent product that can be used without any problem if it is a work purpose like personal use DIY.