Main Feature : 1.The whole body is hard processed after fire, and the surface of the body is blackened, which has a very good rust resistance. The blade position and threaded hole are both finish processed after fire, and the threaded hole is finish milled by a thread milling cutter, which ensures the position degree and higher accuracy. 2.Dynamic bevel design realizes low resistance, low vibration sense, effectively improves rough machining feed speed and ensures good surface roughness 3.Double sided thickened, negative B blade design, High strength to ensure processing stability