Hexagonal shank step drill, the surface adopts titanium plating process, so that the whole work piece looks very powerful, commonly used to process metal drilling, is a very good choice.

The material is divided into bearing steel and high-speed steel 4241, and the groove type is divided into straight groove and spiral groove to choose from.

There are all kinds of packaging, cloth bags, wooden boxes, plastic boxes, iron boxes, aluminum boxes to choose from.