There is a kind of this kind of iron bolt in general, but when using it for a vehicle, since high torque can not be applied, it was troubled because the place was limited. Also, the SCM 435 class hexagon socket button bolt that can be engaged with this high torque is extremely easy to use, but in many cases you can not choose surface treatment, you need to paint yourself in places where you care about the appearance, It was cumbersome. It is very grateful that you can choose the hues of the black series, and the work quality including the screw precision is well satisfied. We strongly hope to expand other SCM 435 class surface treatment different products such as chrome and stainless black in the future. I also hope that prices will also come.