This is a A-801-1421 Spline Bore Implement Yoke (w/ 21/64" Pin Hole) PN: 801-1421Main Description As Following : A-801-1421 Spline Bore Implement Yoke (w/ 21/64" Pin Hole) PN: 801-1421 Found in Section & Models : Driveline > Driveline Components, Weasler Domestic: 14 Series, Driveline > Yokes, Weasler Domestic: 14 Series Associated Items : New Also This is An Aftermarket Product And : 14 Series Implement Shear Yoke with Pin Hole. 1-3/8" round bore with 21 splines and 24/64" pin hole. Original Weasler part. Bore: 1 3/8" - 21 Spl. Pin Hole: 21/64"