... 0 ≥2150High wear resistance, used for hard wood, used for processing original wood, aluminum section bar, brass rod and cast iron. JT6A ... 1850Higher wear resistance than YG6, used for processing hard wood, original wood, aluminum section bar, brass rod and cast iron. JT8 K30 ... and percusstion resistance,used for processing hard wood, soft wood, ferrous and non ferrous section bars. JT2T M30 14.5 ≥91. ...