5PCS 1/2'' Carbide Square End Mill Bits Set, Milling Bits Cutter 1/2 Carbide End Mills for Alloy Steels/Hardened Steels, HRC 45 Deg Single End 4 Flute AlTiN Coating

Package Included: 5pcs 1/2" carbide square end Mill | Material: Made of micro grain carbide. Carbide has higher hardness and wear resistance and excellent cutting performance than high-speed steel. | Coating: AlTiN, high aluminum content provides excellent hot hardness and oxidation resistance. | HRC 45 deg :carbide end mill tools excel at working carbon steels (~ HB225), alloy steels (HB225 ~ 325), pre-hardened steels (up to HRC45), hardened Steels (HRC40 ~ 45), cast iron. | Flutes:4 Flutes,high rigidity ,widely used in shallow slot,profile milling,and finish machining.