The John Deere CC129021 Hub is a genuine OEM replacement part designed for various John Deere combine harvester models, including the 9560STS, 9570STS, 9660STS, 9670STS, 9760STS, 9770STS, 9860STS, 9870STS, S660, S670, S670HM, S680, S680HM, S690, S690HM, S760, S770, S780, S785, S790, T550, T560, T660, T670, W540, W550, W650, and W660. This essential component weighs approximately 7.94 kg and measures 254 mm in length, 254 mm in width, and 254 mm in height, ensuring a precise fit and optimal machine operation.