HIGH QUALITY: These end mills are made of ultra-fine grain cemented carbide with good milling and cutting performance, which ensures high working efficiency. SHARP: These end mills have sharp edges, can be used for milling holes, grooves and edges on plates and the process will be smooth. GREAT PERFORMANCE: Have bending resistance, wear resistance, high hardness, high wear resistance and high strength. PROCESS WITH DIFFERENT MATERIALS: Many objects or materials can be engraved such as circuit boards, metal, plastics, stainless steel and copper. COATED AND POLISHED SURFACE: The well-polished surfaces are very clean, and there are no glitches or burrs on the shank, very safe for you.