Introduction of Carbide End Mill: The milling cutter is a multi -teeth rotary tool, and each of its knife teeth is equivalent to a car knife fixed on the rotary surface of the milling cutter. At the same time, the cutting blade of the cutting blade at the same time is long, and there is no short itinerary. The VC is also higher, so the productivity is higher. There are many types of milling cutters, different structures, and wide application range. According to their use, it can be divided into three categories: milling cutter, processing grooves for milling cutters, and milling cutters. Feature of HRC HRC45 series: the carbide rod with hardness 91.8HRA, the grain size is 0.6�¼m. With nano meter coating technology, it is suitable for mould steel, alloy steel, cast iron and stainless steel. In rough machining and rough to finishing machining HRC55 series: the carbide rod with hardness 92.5HRA, the grain size is 0.4�¼m. With AD coating technology, it is suitable for milling normal steel to pre-harded steel. It can also mill the mould steel, stainless steel, cast iron and aluminum milling with rough machining and finish machining. it can get very good surface on the work piece. it is a good quality of end mill, with high performance. HRC65 series: the carbide rod with hardness 93.9HRA, the grain size is 0.2�¼m. With new composite coating, it is suitable for work piece in HRC53-65 of high hardness of steel, it is specially widely used in high speed and high hardness field.