Solid Carbide Endmills Solid Carbide Endmills G450 Series for Alloy Steel, up to HRC 48 Micro grain carbide rod is suitable for general machining. UNICO coating provides superior wear resistance and reduces the FRHႈFLHQWRIIULFWLRQ Positive geometry is suitable for better shearing. Excellent cutting ability of cutting edges. SA131