This is a A-801-1206 Spline Bore Implement Yoke (w/ 21/64" Pin Hole) PN: 801-1206Main Description As Following : A-801-1206 Spline Bore Implement Yoke (w/ 21/64" Pin Hole) PN: 801-1206 Found in Section & Models : Driveline > Driveline Components, Weasler Domestic: 12 Series, Driveline > Yokes, Weasler Domestic: 12 Series Associated Items : New Also This is An Aftermarket Product And : 1200 Series Implement Yoke with Splined Bore. 1-3/8" 6 Spline with 21/64" pin hole. Original Weasler part. Bore: 1 3/8" - 6 Spl. Pin Hole: 21/64" Replaces: Neapco Part No: 12-1172