This is a A-804-1016 Implement Yoke, 1" Square Bore, w/ Set Screw PN: 804-1016Main Description As Following : A-804-1016 Implement Yoke, 1" Square Bore, w/ Set Screw PN: 804-1016 Found in Section & Models : Driveline > Driveline Components, Neapco DOMESTIC: 1000 SERIES, Driveline > Yokes, Neapco DOMESTIC: 1000 SERIES Associated Items : New Also This is An Aftermarket Product And : 1000 series Implement Yoke. 1" square bore with set screw and 2-1/2" centerline. Weasler alternative to original part. Bore: 1" Sq. Centerline To End: 2-1/2"