Introduction to Tungsten Carbide Millning ToolsTungsten carbide lnmu turning tool, also known as LNMU cnc inserts, are cutting tools made from a composite material of tungsten and carbon. These inserts are widely used in the metalworking industry for machining operations such as turning, milling, and drilling.One of the key advantages of LNMU inserts is their versatility. They can be used for roughing, finishing, and profiling operations on a wide range of materials, including steel, stainless steel, aluminum, and cast iron. This makes them a popular choice for manufacturers in various industries, such as automotive, aerospace, and general engineering.turning tools play a crucial role in the manufacturing industry by enabling precise and efficient shaping of materials.