Specification Brand : Ylwxzenith BulletPoint1 : High Accuracy & Speed: The CNC milling tool holder offers machining with an accuracy of 0.05mm and a speed of 12000RPM, ensuring efficient and high-quality results. BulletPoint2 : sturdy Construction: Made with fine workmanship, the tool holder undergoes long-term thermal treatment to effectively remove remaining internal stress during grinding, resulting in a longer service life. BulletPoint3 : -Proof & Wear-Resistant: The coating appearance of the tool handle provides -proof and wear-resistant properties, protecting the spindle from wear and ensuring smooth operation. BulletPoint4 : Advanced Heat Treatment: Heat treatment with a vacuum quenching furnace improves the hardness of the tool holder, further enhancing its durability and performance. BulletPoint5 : Wide Clamping Range: With a clamping range of approximately 3 20mm / 0.1 0.8in, this CNC milling tool holder is versatile and can accommodate a wide range of tools for various machining needs. IncludedComponents : 1/2-Inch Collet ItemName : High Accuracy CNC Milling Tool Holder, SK40 ER 100 Model, for CNC Machine Tools, Proof and Wear Resistant, Vacuum Quenching Furnace Heat Treatment, Fine Workmanship, ItemPackageDimensions_Height : 9 centimeters ItemPackageDimensions_Length : 19 centimeters ItemPackageDimensions_Width : 9 centimeters ItemTypeKeyword : spring-clamps Manufacturer : Ylwxzenith ModelName : Ylwxzenith9xtq1ugphe ModelNumber : Ylwxzenith9xtq1ugphe PartNumber : Ylwxzenith9xtq1ugphe PowerSourceType : ac/dc ProductDescription : Item Type: CNC Milling Tool Holder Model: SK40-ER-100 Material: 20CrMnTi Hardness: 58±2HRC Purpose: Used for CNC machining Scope of Application: CNC machine tools Accuracy0.05mm Speed 12000RPM Clamping Range: Approx. 3 ~ 20mm / 0.1 ~ 0.8in L: Approx. 155mm / 6.1in D: Approx. 63mm / 2.5in d1 Nut Outer Diameter: Approx. 50mm / 2in Nut Height: Approx. 25mm / 1in