1MANGANESE STEEL MATERIAL: The collet shank holder is crafted from premium manganese steel, ensuring durability and longevity. The surface undergoes a blackening process to enhance its resistance to oxidation and increase hardness. 2STRONG LOCKING FORCE: With a clamping range of 1 to 10mm, the chuck shank holder provides a strong locking force to securely hold the cutting tool in place. This ensures stability and accuracy during machining processes, preventing any slippage or misalignment. 3VERSATILE COMPATIBILITY: The collet shank holder is compatible with various machines such as drilling machines, milling machines, lathes, bench drills, and small sized machine tools. Its versatility allows it to be used in a wide range of applications, making it a practical tool for different machining needs. 4LONG LASTING PERFORMANCE: Thanks to its high hardness and excellent oxidation resistance, the morse shank holder offers exceptional performance and a long service life. It can withstand the demands of heavy duty machining operations, providing reliable and consistent results over time. 5EASY REPLACEMENT: The ER16 morse milling cutter shank features a convenient and user friendly design, making it easy to replace and interchange with other tools effortlessly. This saves time and improves efficiency in machining operations.