The Case-IH 2804228R3 is a genuine OEM 20-inch (508 mm) notched disc harrow blade, designed for optimal soil penetration and tillage performance. With a thickness of 4.4958 mm (0.177 inches) and a 38.1 mm (1.50 inch) center hole, this durable blade ensures efficient operation and longevity. It is a direct replacement part for a wide range of Case-IH disc harrow models, including the 475, 480, 485, 490, 496, 760, 800, 3900, 3950, 3950B, 4900, 4950, 4960, 6900, 6950, and 6960 series.