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The Jaw Coupling Hub by Boston Gear is an essential component for various industries looking to improve power transmission in their equipment. Made from durable steel, this FC12 size hub provides superior grip and reliability for your rotating machinery. With a bore diameter of 1/2 inch and a keyway size of 1/8 inch x 1/16 inch, it is compatible with most shafts on the market. Its stainless steel construction ensures that it can handle tough operating conditions without corroding or wearing down. Whether you're working with motors, pumps, conveyors, or other heavy machinery, this Jaw Coupling Hub from Boston Gear delivers unbeatable performance and value.