1、Specifications: The interface outer diameter of the round die chuck is 30mm, and the maximum threading depth is 90mm, which is accurate and practical. 2、Carbon Steel: The die chuck is made of carbon steel, with quenching and blackening surface treatment, has high hardness and good oxidation resistance. 3、Fast Installation: The round threading die allows quick and easy installation and removal, saving your maintenance time when switching between applications. 4、With Hex Wrench: The threading die chuck is small and compact, equipped with a hex wrench, which is convenient to use, and has good practicability. 5、Wide Application: The die chuck is widely used in tapping machines, drilling machines, milling machines, boring machines and pneumatic tools, etc