This is a A-H202801 Shaft, Primary Jackshaft PN: H202801Main Description As Following : A-H202801 Shaft, Primary Jackshaft P.N: H202801 Dim A (1): 61.69" LongDim B (2): 29 Teeth Crossed From: AV104481 VAPORMATIC Found in Section & Models : Threshing Area > Threshing Area Shafts, John Deere COMBINE: S550, John Deere COMBINE: 9560STS, John Deere COMBINE: 9570STS Associated Items : A-JD9339 Also This is An Aftermarket Product And : Length: 61.69" Teeth: 29