Various sizes, from very small to very large. The size of the tapping drill bit depends on the hole size and type of material being tapped.
High-speed steel drill bits are used to machine threads in a variety of materials, including metals, wood, plastics and composites.
Made of high-speed steel, fully tempered and ground to make the drill sharper. High quality material is wear-resistant and durable.
High quality materials that are not easily corroded or deformed can be used for all types of metals HRC<30°