A-6213789-AI Low Plate, 2 ProngOne New Aftermarket Replacement 2 Prong Low Plate for Hesston, Case IH, and John Deere Swathers, Windrowers, and Mower Conditioners This aftermarket replacement 2 prong low plate mounts to the sickle cutter bar on windrowers, swathers, and mower conditioners. Used with the 049270 guard assembly, the low plate secures the sickle knife sections and guides crop material into the cutting zone. Worn or damaged low plates allow knife sections to deflect,