This is a A-700-6343 Outer Profile Yoke (With Bearing Groove) PN: 700-6343Main Description As Following : A-700-6343 Outer Profile Yoke (With Bearing Groove) PN: 700-6343 Found in Section & Models : Driveline > Driveline Components, Bondioli & Pavesi 100 Series: Size 3, Driveline > Yokes, Bondioli & Pavesi 100 Series: Size 3 Associated Items : New Also This is An Aftermarket Product And : Weasler alternative to original part. Bore: 1 11/16" - 43.0 mm