The Oregon 96003 Gator Mulcher 3-in-1 blade is a high-performance aftermarket blade designed to replace Noma OEM part 56820. This blade measures 520.7 mm (20-1/2 inches) in length, 57.15 mm (2-1/4 inches) in width, and 3.81 mm (0.150 inches) in thickness. It features a 15.875 mm (5/8 inch) center hole and two 9.525 mm (3/8 inch) outer holes with a 63.5 mm (2-1/2 inch) center-to-center spacing. Weighing approximately 0.816 kg (1.80 lbs), it is engineered for mulching, bagging, and discharge applications on 20-inch cut walk-behind mowers.