This is a A-404-1615H Shaft, 1" x 15 Spline PN: 404-1615HMain Description As Following : A-404-1615H Shaft, 1" x 15 Spline PN: 404-1615H Found in Section & Models : Driveline > Driveline Components, Weasler Domestic: 6 SERIES, Driveline > Shafting & Tubing, Weasler Domestic: 6 SERIES Associated Items : New Also This is An Aftermarket Product And : Induction Hardened Original Weasler part. Bore: 1" - 15 Spline Length: 3'