This is a A-102-6820 Tractor Yoke, 1 3/4" - 20 Spline Q.D. PN: 102-6820Main Description As Following : A-102-6820 Tractor Yoke, 1 3/4" - 20 Spline Q.D. PN: 102-6820 Found in Section & Models : Driveline > Driveline Components, Bondioli & Pavesi 100 Series: Size 8, Bondioli & Pavesi 400 Series: Size 8, Driveline > Yokes, Bondioli & Pavesi 100 Series: Size 8, Bondioli & Pavesi 400 Series: Size 8 Associated Items : New Also This is An Aftermarket Product And : Splined Tractor Yoke, 1-3/4" - 20 Spline with slide collar. Weasler alternative to original part. Dim C (3): B: 117 MM (4-5/8") Bore: 1 3/4" x 20 Spl.