Features GOOD PERFORMANCE The milling tool holder has high thermal strength and oxidation resistance, as well as good comprehensive mechanical properties, stable performance and strong practicality. Durable material: the cutter holder is made of high-quality 40CrMnTi material, surface quenching process, stable work, high hardness, long-term use without deformation, I believe it can make your life more convenient. Stable operation: double-sided card key, double-sided restraint design, it is not easy to swing left and right with strong cutting, ensuring processing rigidity, 100% new and high quality, reliable and safe quality. STANDARD THREAD The cutter holder has a standard thread 7/16-20, with high precision, easy installation and clamping, and a perfect replacement for old or broken one. FOR MILLING TOOLS: Router shank adapters are commonly used in milling machine holders and are suitable for various CNC milling process conditions with a variety of functions and obvious effects. Specification: Item Type:Milling Tool Holder Model: R8 FMB32. Material: 40CrMnTi Accuracy: 0.005mm Hardness: >HRC50°-55°. Thread Size: 7/16-20 Package list: 1 x milling tool holder Package List 1 x Milling Tool Holder