AGRIA compatible right/left tiller knife Screw & Nut Thread: M8 x 1 L (mm): 30 G (mm): 20 : 10.9 Dimensions (mm): M8 x 1 x 30, 10.9 per blade: 2 Right knife code: 180AGR-13R Original right code: 1250-17223 Left knife code: 180AGR-13L Original left code: 1250-17222 Screw and nut code: 18030-830 NS