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Introducing Lovejoy's 7/8 Inside x 3.31 Outside Diameter Rigid Coupling Hub. Engineered to perfection, this coupling hub is crafted from carbon steel for enhanced durability, designed with a tight fit and secure connection for efficient torque transmission, all while maintaining a compact size to work seamlessly in tight spaces. Perfectly suited for demanding applications in manufacturing systems and heavy-duty machinery, this coupling hub delivers smooth performance, vibration reduction, and unmatched reliability. With a wide range of applications from automotive to industrial use, the Lovejoy 7/8 Inside x 3.31 Outside Diameter Rigid Coupling Hub is a must-have for any business looking to optimize performance and reduce downtime. Order yours today!