Caterpillar-style bolt-on end bit for a D9 Caterpillar Bulldozer is a hot-cupped right-hand end bit that is 2 inches (50.8 mm) thick, 16 inches (406.4 mm) wide, and 24 inches (609.6 mm) in length, requiring seven 1 x 3 1/4 inch (25.4 x mm) plow bolts and seven 1-inch (25.4 mm) hex nuts, with bolt hole spacing of 4 inches (101.6 mm) from center to center and inches ( mm) from the edge of the bucket cutting edge to the center of the first hole. 8E-4197