
High-Quality HRC55 Degree 4 Flute Corner Radius End Mill for Steel Processing. High Hardness Material: Made from ZK30UF tungsten steel with HRA 92 and high wear resistance. TiSiN Coating: Features TiSiN coating for enhanced durability and performance in steel processing. Customizable Label: Label and laser tag can be customized according to customer requirements. Professional Manufacturer: Owns both tools factory and cemented carbide factory for quality control. Large Stock Availability: Regular types and sizes are kept in large quantity stock for quick delivery. ISO9001 Certified: Manufacturing process certified under ISO9001:2015 management system. 100% Inspection: Finished products undergo 100% visual and function inspection before shipping. Fast Sample Delivery: Samples ready in 3-7 days and arrive in 3-5 workdays via express.