It is a manufacturer that tends to be treated as a cheap something somewhat but the ability is certain. In some cases, it is easier to use than TONE, KTC. However, design alone is disappointing from long ago.
With expected quality, Cospa is good. Once the screw thread collapses, the nut can not be removed, I use the top industrial tool to remove the nut by force technique (manpower), I am continuing to use it from the experience I solved. Inexpensive tool of the home center → Before the nut disengaged, the tool was damaged and it was not used. Top industry → You can remove the nut and no tools at all. It seems that considerable force has hung on the tool, but it was possible to remove it without licking the nut. Of course neither tool nor damage.
TOP industry is not as famous as KTC, but it is a domestic tool company with history. As expected, the domestic plating is a slip stopping grain processing, the eyeglass part is thin and firmly and it seems to be used long. (The low-priced items made in china are related to material strength? The eyeglasses become thick and thick.) "Ultra long glasses 12x14" is a good tool for the belt exchange work of the K6A engine.