The Nakajima coupling, made from brass material, is designed to connect two shafts in mechanical systems. With a 2-inch (40mm) diameter, this coupling is commonly used for transferring torque between shafts, ensuring smooth operation in various industrial and mechanical applications. The brass material provides durability, corrosion resistance, and a high level of strength. This coupling is ideal for use in systems where reliable, long-lasting performance is crucial, such as in pumps, motors, or other rotating machinery.