The Magnaloy Coupling Model 300 1-5/8X3/8 Hub M30012012 is a high-quality mechanical power transmission component designed for industrial automation and motion control systems. With a bore size of 1.625 inches, this coupling is specifically designed to provide smooth and efficient power transmission in various mechanical applications. The Magnaloy brand is known for producing reliable and durable couplings, making this product a trusted choice for businesses and industrial facilities seeking precision and performance in their machinery.