Each tool holder is black oxidized smooth surface and tool hardness (HRC 48 degrees up and down) and precision are up to the first grade.
Turning inserts exquisite workmanship, high strength, high toughness, stable and durable.If you need more matching insert or turning holder set, you can search for B07G386Y3B (inserts) or B076WTPBVK (holder).
★The material of the turning tool holder is 40Cr steel, black oxide smooth finish on each turning tool holder marked with tool holder style and shank size..
★The material of the insert is carbide,the inserts can be used for finishing or semi-finishing steel, the inserts has high hardness, low friction coefficient, good wear resistance and chemical stability..
★If you need more matching insert or 5/8" left turning holder set, you can search for B07G386Y3B , B07Q1117MJ (inserts) or B07B8XNH98 , B07TTL32HW (holder).