QUALITY INDEXABLE CNC LATHE'SÂ BORING TOOLS WITH KEYSÂ SPECIAL GRADE TOOL STEEL, WHICH MAKES THEM FLEXIBLE, HARD BUT NOT BRITTLE TO RUN THROUGH UNEVEN TURNING PROFILE AS WELL EPOXY BLACK FINISH FOR A RUST FREE LIFE. LASER MARKED WITH INFORMATION OF SHANK, INSERT, SCREW AND KEY INFORMATION