Introducing the High Efficiency CNC Insert for Tungsten Steel Reamer and Rough Milling by KM. Crafted from durable tungsten carbide with a hardness of 40-50, this lathe turning tool ensures stable performance and extended tool life. Perfect for processing carbon steel, cast iron, and stainless steel, each box contains 10 customizable inserts in various coatings. Elevate your machining efficiency today! Welcome to visit our website!