W/ Lock Collar narrow inner race and a 40mm spherical outer race 1/2" Insert Ball Bearing for SA201-08G 10381 High quality 1/2" insert bearing. This bearing has a locking collar for attaching to the shaft. It has a narrow inner race and a 40mm spherical outer race. Greaseable. For a precise fit and wise selection. Please confirm your model above before ordering. Double-check dimensions and photos for the right fit. Quality assurance ：Well-designed, excellent processing. Made of highly durable materials, rigorously This is a manufacturer substitution. Functional equivalent to prior parts.Product Description Well-designed, excellent processing.tested, compact & sturdy, longevous. Ultra Durable, Quality Replacement.Made from durable high quality material and well-tested by the manufacturermade from durable high quality material and well-tested by the manufacturer