Enhance the precision and stability of your machining projects with this high-quality Extension Rod, expertly crafted from superior 40Cr material combined with carbon steel for exceptional strength and durability. Designed with integrated molding and fine processing, this tool holder offers excellent concentricity and vibration suppression, ensuring stable and reliable performance in high-accuracy machine tool applications. Key Features: · Premium 40Cr Material Construction: Manufactured from excellent 40Cr steel, providing high strength, durability, and effective vibration reduction for improved machining accuracy. · Integrated Molding Design: The inside and outside of the tool holder are integrally formed with fine machining, delivering stable performance and long-lasting reliability. · Precise Inner Hole Grinding: Processed through inner hole grinding treatment, making it highly suitable for high-precision machine tool operations with superior concentricity. · Advanced Quenching Process: Features carburizing and quenching treatment to achieve high hardness (45-46HRC) and enhanced interface fatigue resistance, extending tool life. · Standardized Size Compatibility: Equipped with a standard shank diameter of approximately 10mm (0.4in) and thread type A, designed for ER11 collets with a clamping range of 1-7mm (0.04-0.28in), ensuring wide compatibility and ease of use. · Compact and Practical: The head diameter measures approximately 18mm (0.7in), making it a versatile extension rod adapter for various machining setups. Specifications: · Product Material: 40Cr + Carbon Steel · Hardness: 45-46HRC · Head Diameter: Approx. 18mm / 0.7in · Clamping Range: Approx. 1-7mm / 0.04-0.28in · Adapter Collet: ER11 · Thread Type: A · Tool Shank Diameter: Approx. 10mm / 0.4in Package Includes: · 1 x Extension Rod This Extension Rod is an ideal accessory for professionals seeking enhanced machining accuracy and tool stability. Its robust construction and precise design make it a dependable component for machine tool applications, delivering consistent performance and extended durability.