Reference Code:H171038. Compatible with:9560 STS, 9570 STS, 9660 STS, 9670 STS, 9750 STS, 9760 STS, 9770 STS, 9860 STS, 9870 STS,S650, S660, S670, S680, S690, S760, S770, S780, S785, S790. 86977537 Knife Section Fit For Case IH Corn Head 2206 2208 2212 241220 241222.