This is a genuine McCormick 6660543A1 Bearing, engineered for optimal performance and durability in McCormick agricultural machinery. With an inner diameter of 40 mm, an outer diameter of 80 mm, and a width of 18 mm, this high-quality bearing weighs approximately 0.4 kg. It is compatible with various McCormick tractor models, including the CX, MC, MTX, X6, X7, and XTX series, providing essential support for critical components and ensuring smooth operation.