This is a A-300-2600 Shaft Weld Yoke (w/ Bearing Groove) PN: 300-2600Main Description As Following : A-300-2600 Shaft Weld Yoke (w/ Bearing Groove) PN: 300-2600 Found in Section & Models : Driveline > Driveline Components, Neapco DOMESTIC: 2600 SERIES, Driveline > Yokes, Neapco DOMESTIC: 2600 SERIES Associated Items : New Also This is An Aftermarket Product And : 2600 series shaft weld yoke with bearing groove. Yokes has 1-5/16" square bore. Weasler alternative to original part. Bore: 1 5/16" Sq.