This is a A-418647A1HB Concave, Front Helical (Small Grain) PN: 418647A1HBMain Description As Following : A-418647A1HB Concave, Front Helical (Small Grain) P.N: 418647A1HB Helical bar concave features angled cross bars for more aggressive threshingQuantity: 1 UsedType: Small Grain, Helical Bars Replaces: CIHCH1680F IH COMBINE , 418647A1-HB IH COMBINE , Crossed From: AV100165 VAPORMATIC , SW07860 , , 300-C418647 , , 300C418647 , Found in Section & Models : Threshing Area > Concaves, Case-IH COMBINE: 1680, Case-IH COMBINE: 1682, Case-IH COMBINE: 1688, Case-IH COMBINE: 2188, Case-IH COMBINE: 2388, Case-IH COMBINE: 2577, Case-IH COMBINE: 2588, Case-IH COMBINE: 7088, Case-IH COMBINE: 7130 Associated Items : A-CP16801 Also A-IH-S-1660COMB, A-IH-S-1660COMB And : Helical bar concave features angled cross bars for more aggressive threshing Quantity: 1 Used Type: Small Grain, Helical Bars