I looked at a lot of tap and die sets before deciding on this one. I am very pleased with my purchase. I have purchased several Vevor products and they have all been surprisingly good value for the money. This set is no different. I use it for a well setup hobby shop. This set has a huge well organized assortment and has just about every size covered that I could see needing anytime soon. It has done everything I have needed so far. It is not a master machinist set but is an extremely good value for the price point.