87600861 New LH Extended Wear Round Bar Concave Fits Case-IH Combine ModelsOne New Aftermarket Replacement LH Extended Wear Round Bar Concave Fits Case IH (Fits Case IH) Combines This Left Hand (LH) Extended Wear Round Bar concave is a threshing system component Fits Case IH axial flow combines. Concaves perform the threshing and separation of grain from the stalk, cob, or pod inside the rotor housing. The round bar design is well suited for corn, soybeans, and other high moisture crops where a more open concave is needed to