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This high-quality set of 4 metal ball bearings from Sterling Instruments is a must-have for any industrial automation and motion control setup. These bearings are made from durable 440C stainless steel and feature an ABEC 7 rating for precision performance. Perfect for use in mechanical power transmission and other bearing and bushing applications, these bearings are brand new and ready to provide reliable and long-lasting performance. The set is compatible with a wide range of business and industrial equipment.