Description Feature: 1. Firm Clamping: This lathe tool chuck will firmly clamp the round die, mainly used for processing or correcting the male thread. 2. High Performance: Precisely manufactured, the chuck has good stability, not easy to break, with high safety factor, can be used with confidence. 3. Quick Installation: This chuck allows quick and easy installation and removal, could save a lot of time when switching between applications. 4. Carbon Steel Material: This chuck is made of carbon steel, the surface is quenched and blacked, has strong oxidation resistance, high hardness and long life. 5. Wide Application: The die chuck is widely used in tapping machines, drilling machines, milling machines, boring machines, pneumatic tools, etc. Specification: Item Type: Round Die Chuck Material: Carbon steel Interface Outer Diameter D: Approx. 31mm/1.22in Die Internal Diameter d: Approx. 30mm/1.18in Die Interface Height L1: Approx. 10mm/0.39in. Package List: 1 x Round Die Chuck1 x Hex Wrench