This is a A-700-6443 Outer Profile Yoke (With Bearing Groove) PN: 700-6443Main Description As Following : A-700-6443 Outer Profile Yoke (With Bearing Groove) PN: 700-6443 Found in Section & Models : Driveline > Driveline Components, Bondioli & Pavesi 100 Series: Size 4, Driveline > Yokes, Bondioli & Pavesi 100 Series: Size 4 Associated Items : New Also This is An Aftermarket Product And : Weasler alternative to original part. Dim B (2): B: 61 MM Dim C (3): C: 27 MM Dim D (4): D: 84 MM (3-5/16") Bore: 1 11/16" - 43.0 mm