This is a genuine Case IH 137700420718 drive shaft, officially designated as "DRIVE SHAFT LONG NML". Engineered for optimal performance and durability, this OEM component is essential for reliable power transmission in Case IH Farmall A series tractors. It is specifically designed to fit models including the Farmall 100A, 110A, 120A, and 140A. Weighing approximately 4.536 kg, this drive shaft ensures the integrity and efficient operation of your agricultural machinery.