This is a A-AH207851HB Concave, Helical Bar, Middle/ Rear, Small Wire, High Wear PN: AH207851HBMain Description As Following : A-AH207851HB Concave, Helical Bar; Middle/ Rear, Small Wire, High Wear P.N: AH207851HB Type: High Wear, Small Grain Found in Section & Models : Threshing Area > Concaves, John Deere COMBINE: S650, John Deere COMBINE: S660, John Deere COMBINE: S670, John Deere COMBINE: S670 HILLMASTER, John Deere COMBINE: S680, John Deere COMBINE: S680 HILLMASTER, John Deere COMBINE: S685, John Deere COMBINE: S685 HILLMASTER, John Deere COMBINE: S690, John Deere COMBINE: S690 HILLMASTER, John Deere COMBINE: S760, John Deere COMBINE: S770, John Deere COMBINE: S770 HILLMASTER, John Deere COMBINE: S780, John Deere COMBINE: S780 Hillmaster, John Deere COMBINE: S785, John Deere COMBINE: S785 Hillmaster, John Deere COMBINE: S790, John Deere COMBINE: S790 Hillmaster, John Deere COMBINE: 9650STS Associated Items : New Also This is An Aftermarket Product And : Type: High Wear, Small Grain