Features Integrated Design For Stability: The straight shank structure ensures a tighter fit, providing enhanced stability during operation for improved precision and performance High-Quality Material: Constructed from premium high-speed steel, this chuck undergoes special quenching treatment for superior hardness and wear resistance, ensuring longevity Self-Tightening Mechanism: The automatic fastening device prevents slipping or falling off, guaranteeing secure attachment and reliable operation throughout your projects Exceptional Accuracy: With a clamping precision of 0.08mm, this chuck automatically increases clamping force, significantly boosting productivity and efficiency in your tasks Compact And Lightweight: Designed for industrial applications, this small and lightweight drill chuck is ideal for milling machines, making it easy to handle without sacrificing power Features: 1、Equipped with a straight shank, the chuck structure is tighter in the integrated design and the is more stable. 2、Made of high？quality high？speed steel material, and has undergone special quenching treatment, which has high hardn and wear resistance. 3、Automatically fasten the keyl device, it is not easy to fall off or slip after installation and use. 4、With an accuracy of 0.08mm, the clamping force can be automatically increased, which helps to improve procing efficiency. 5、The integrated design is small in size and light in weight, especially suitable for industrial procing, often used in milling machines. Specification: Item Type: Drill Chuck Material: High speed steel Hardn: 40HM Accuracy: 0.08mm Application: Mainly used for milling machines Package List: 1 x Drill Chuck Package List 1 x Drill Chuck