The Grainger website features internal threading tools with a 3/16 inch shank diameter. These single-point threading tools have high speed steel inserts that provide good wear resistance and allow cutting of harder materials. They come in various styles including hand, screw lock, and quick change styles. The tools have an overall length ranging from 3 to 6 inches. They are designed for internal threading applications on lathes, screw machines, and CNC machines. The tools feature TiN coating for increased lubricity and chip flow. Overall, these are quality high-speed steel internal threading tools for cutting internal threads on various materials.