Item Type: Round Die Chuck Model: GT24 M16 M20 Material: Carbon Steel Interface Outer Diameter: Approx. 30mm / 1.2in Maximum Threading Depth: Approx. 90mm / 3.5in Package List 1 x Round Die Chuck 1 x Hex Wrench 1Specifications: The interface outer diameter of the round die chuck is 30mm, and the maximum threading depth is 90mm, which is accurate and practical. 2Carbon Steel: The die chuck is made of carbon steel, with quenching and blackening surface treatment, has high hardness and good oxidation resistance. 3Fast Installation: The round threading die allows quick and easy installation and removal, saving your maintenance time when switching between applications. 4With Hex Wrench: The threading die chuck is small and compact, equipped with a hex wrench, which is convenient to use, and has good practicability. 5Wide Application: The die chuck is widely used in tapping machines, drilling machines, milling machines, boring machines and pneumatic tools, etc