This is a A-808-1016 YOKE SLIP 1000 1" SQ. PN: 808-1016Main Description As Following : A-808-1016 YOKE SLIP 1000 1" SQ. PN: 808-1016 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 : Slip Sleeve Yoke. 1" Rectangular bore with 5-1/2" centerline. Weasler alternative to original part. Bore: 1" Centerline: 5 1/2" Replaces: Neapco Part No: 10-3122