Features:1.Features a self-centering point to eliminate the need for center drilling.2.It is specially designed for soft metal tapping, aluminum plate, iron plate, etc.3.It is quick and easy to install.4.It will improve your working efficiency.5.Easily adapts to any drill. Notice:Please allow 1-3cm deviation due to manual measurementActual color may be slightly different from the image due to different monitor and light effectDescription:Material:High speed steel Size:as shownInclude:1 set x Thread Bits Kit