The McCormick 392191X1 is an authentic OEM ball bearing, precisely engineered with an inner diameter of 17mm, an outer diameter of 40mm, and a width of 12mm. This robust bearing weighs 0.12 kg and is designed to provide reliable performance and smooth operation in a wide range of McCormick agricultural tractors, including models like MC100, MTX120, and X7.440. It ensures optimal functionality and durability for critical machinery components and is also an OEM equivalent for Case IH and New Holland applications.