Solid Carbide EndmillsMilling Solid Carbide Endmills G550 Series for general milling (Hardened steel & Steel HRC 25~55) Micro grain carbide rod is suitable for general machining. UNICO coating provides superior wear resistance and reduces the coefficient of friction. Stabilization of the cutting edge by edge flatland design and prevent chipping at corners. Universal geometry design is suitable for most materials. A074