1. Made of carbon steel material with quenching process, high hardness and durable to use.2. Black oxidized treatment for corrosion resistance.3. The middle of the rod has an embossing design. After being pressed to lock, the rod will not fall off. It is firm and stable.4. T-handle design provides a firm grip and achieves large torque.5. Used for CNC Router Engraving Milling Machine Lathe Chucks.Specification:Material: Carbon SteelFinish: Black OxideSquare Size: 12mmRod Diameter: 13mm / 0.51-inch, 23mm / 0.91-inchLength: 125mm / 4.92-inch, 250mm / 9.84-inchPackage Content:1 x Lathe Chuck Key
