This is a A-704-5500 Tube Weld Yoke (w/ Bearing Groove and Bore) PN: 704-5500Main Description As Following : A-704-5500 Tube Weld Yoke (w/ Bearing Groove and Bore) PN: 704-5500 Found in Section & Models : Driveline > Driveline Components, Weasler Domestic: 55 Series, Driveline > Yokes, Weasler Domestic: 55 Series Associated Items : New Also This is An Aftermarket Product And : 55 series tube weld yoke, bearing groove and bore. Yoke fits 2-1/2" tube with .120 wall thickness. Original Weasler part. Fits Tube: 2 1/2" (.120 Wall w/ Bore)