Attributes: What Is Included:Applications & Features:--- This combination drill and tap bit set is suitable for processing holes. It can be used for tapping aluminum, stainless steel, bronze, hard plastics, etc.--- The combination drill and tap bit set allows for hole drilling, tapping, deburring, and countersinking in one step, saving processing time and improving efficiency.Useful Tips:--- When using the combination drill and tap bit set, it is recommended to use it on drilling machines, tapping machines, CNC, and milling machines.