Features High-Quality Material: Crafted from premium spring steel, this chuck collets clamping nuts are built to last with high hardness, strength, and toughness, ensuring long-term durability and reliability in your machining operations. Strong Clamping Force: Experience enhanced clamping force and precision with a wide clamping range, allowing for secure and accurate grip on your CNC milling chuck or lathe parts, ultimately improving the quality of your work. Versatile Application: Suitable for various operations such as boring, milling, drilling, wire tapping, and engraving, offering a versatile solution for your machining needs, making it a valuable addition to your equipment. Precision Engineering: Carefully handled product details ensure stability and accuracy, providing consistent and reliable performance, allowing you to carry out your machining tasks with confidence and precision. Reliable Replacement: This chuck collets clamping nuts serve as an excellent replacement part, offering compatibility and quality to meet the needs of your CNC milling chuck or lathe parts, ensuring seamless operation and longevity. Specification: Condition: 100% Brand New Item Type: ER11 Chuck + Nut Material: Spring Steel Model: ER11 Optional Chuck Specification: 6mm 5mm 4mm 3.175mm Package List: 1 x Nut 1 x Chuck Package List 1 x Nut 1 x Chuck