AGRIA compatible tiller knife Screw and nut Thread: M8 x 1 L (mm): 30 G (mm): 20 : 10.9 Dimensions (mm): M8 x 1 x 30, 10.9 Right knife code: 180AGR-19R Original right knife code: 616112 Left knife code: 180AGR-19L Original left knife code: 616112 Screw and nut code: 18030-830 NS