P5903004000 Stone Guard for Kuhn Disc Mowers GMD44 GMD55 GMD77HD GMD66 GMD66HDOne New Aftermarket Replacement Stone Guard for Kuhn Disc Mowers GMD44 GMD55 GMD66 GMD66HD GMD77HD This aftermarket replacement stone guard mounts on the inner end disc of the cutterbar on Kuhn GMD series disc mowers. The stone guard shields the cutter disc assembly from rock strikes and deflects debris away from the mower frame, helping protect the cutterbar and operator during field operation. Sold individually, less skid pad. Compatible Models Kuhn