... JT6 K20 14.9 ≥90.0 ≥2150High wear resistance, used for hard wood, used for processing original wood, aluminum section bar, brass rod ... 14.9 ≥92.0 ≥1850Higher wear resistance than YG6, used for processing hard wood, original wood, aluminum section bar, brass rod and ... 14.7 ≥89.5 ≥2320High wear and percusstion resistance,used for processing hard wood, soft wood, ferrous and non ferrous section bars ...