✅ APPLICATION - Our carbide tools are highly effective at machining various types of steel such as Carbon Steels (~HB225), Alloy Steels (HB225~325), Pre-hardened Steels (up to HRC45), Hardened Steels (HRC40~49), and Cast Iron. ✅ AlTiBN COATING - This coating, made of titanium aluminum boron nitride (AlTiBN), offers exceptional stability at high temperatures and surpasses the heat resistance of TiAlN, TiN, or TiCN coatings. ✅ HIGH-PERFORMANCE MATERIAL - This end mill is made from micrograin carbide, which gives it exceptional toughness, durability, and machinability. It performs brilliantly and is an excellent value for its price. ✅ FINE WORKMANSHIP - Our products deliver outstanding high accuracy with an error of -0.02mm, empowering users to achieve professional cutting quality effortlessly. ✅ DEDICATED SUPPORT - Please don't hesitate to contact us on Amazon if you need the Cutting Condition Data. We want to ensure you receive the best product that meets your requirements. Your search for the perfect end mill is over! Our unique drill bit sets are ideal for various drilling, machining, and manufacturing needs. Tired of mediocre end mills on the market that fail to meet your expectations? Looking to enhance your craftsmanship and take your projects to new heights? Seeking a reliable tool to cater to your expertise?Unlike other end mills that compromise on quality and performance, our end mills are crafted with the utmost care and precision, ensuring superior results every time.Introducing Speed Tiger's premium end mill collection, designed to empower DIY enthusiasts and experts alike.FEATURES:Carbide Square End Mill (ISE– 4 flute, 3/8”): 5 piecesBENEFITS:Can be used in various materials from wood to steel, an excellent value for your home and store work needs.Made from micrograin carbide, it has exceptional toughness, durability, and machinability. It performs brilliantly and is an excellent value for its price.Nano precision to manufacture our end mill with the accuracy of ±2μm to enable users to achieve professional cutting quality.Manufactured with robust and tempered steel construction, our drill bits are designed to last, providing superior durability and performance.Featuring an industrial grade, our particular coated drill bit set provides your drill with a longer life, more excellent grip, and precision accuracy, even on the most challenging metals.We provide you with the absolute best customer service. Should you have any issues with the product, we will refund your full purchase price!Rest assured, our products prioritize your safety and are manufactured with the highest standards in mind. Due to high demand and sustainable production practices, our stock is limited.Elevate your creativity and design skills to the next level with Speed Tiger's end mills today!