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General Bearing manufactures End-of-Car cushioning unit keys to OEM standards and strict AAR specifications for demanding freight car applications. All of the keys are proudly made in the USA using steel that is melted and poured in the United States with full material traceability. The EOC cushioning keys are produced from high-quality domestic steel and are designed for dependable fit, strength, and long-term service performance in harsh rail environments. With deep inventory, short lead times, and over 80 years of manufacturing experience, General Bearing remains committed to supplying reliable American-made rail components with consistent quality and performance, the company says.