Welcome to our store! 1. The drill chuck is integrated with an R8 straight shank, featuring a dense structure for more stable operation. 2. The keyless automatic fastening device prevents the cutting tool from slipping during use. 3. High accuracy and strong clamping performance help improve processing efficiency. 4. Made from high-speed steel material, it boasts high hardness and wear resistance after special hardening treatment. 5. This integrated straight shank drill chuck is primarily used for milling machines and can be used with impact drills. Item Type: Drill Chuck Material: High-Speed Steel Hardness: 40HRC Accuracy: 0.08mm Application: Primarily used for milling machines 1 x Drill Chuck Customer satisfaction is our top priority. If you encounter any product issues after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.