The 6506448M91 control knob is a genuine OEM part designed for a wide range of agricultural tractors, including Massey Ferguson, Landini, and McCormick models. This durable knob ensures reliable operation for various control functions within the cabin. With a diameter of 35mm, a height of 35mm, and a weight of 0.01kg, it provides a precise fit and comfortable grip for operators. It serves as a direct replacement for original equipment, ensuring compatibility and performance across multiple tractor series.