Feature: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, etcSpecification:Item Type: Round Die ChuckModel: GT24 M16 M20Material: Carbon SteelInterface Outer Diameter: Approx. 30mm / 1.2inMaximum Threading Depth: Approx. 90mm / 3.5in.Package List:1 x Round Die Chuck1 x Hex Wrench