This is a A-R137913 Shaft, PTO (540 RPM) PN: R137913Main Description As Following : A-R137913 Shaft, PTO (540 RPM) P.N: R137913 Dim A (1): 10.95" longDim B (2): 6 / 25 Spline Found in Section & Models : PTO Parts > PTO and Related Parts, John Deere TRACTOR: 5210, John Deere TRACTOR: 5220, John Deere TRACTOR: 5310, John Deere TRACTOR: 5320, John Deere TRACTOR: 5410, John Deere TRACTOR: 5420, John Deere TRACTOR: 5510, John Deere TRACTOR: 5520 Associated Items : New Also This is An Aftermarket Product And : Dim A (1): 10.95" long Dim B (2): 6 / 25 Spline