This is a A-301-3500 Shaft Weld Yoke (w/ Bearing Groove) PN: 301-3500Main Description As Following : A-301-3500 Shaft Weld Yoke (w/ Bearing Groove) PN: 301-3500 Found in Section & Models : Driveline > Driveline Components, Weasler Domestic: 35 Series, Driveline > Yokes, Weasler Domestic: 35 Series Associated Items : New Also This is An Aftermarket Product And : 35 Series Shaft Weld Yoke with Bearing Groove. Shaft has 1-5/16" 20 spline shaft. Original Weasler part. Bore: 1 5/16" - 20 Spl.