This is a A-804-0614 Square Bore Implement Yoke (w/ Set Screw) PN: 804-0614Main Description As Following : A-804-0614 Square Bore Implement Yoke (w/ Set Screw) PN: 804-0614 Found in Section & Models : Driveline > Driveline Components, Weasler Domestic: 6 SERIES, Driveline > Yokes, Weasler Domestic: 6 SERIES Associated Items : New Also This is An Aftermarket Product And : 6 series implement yoke, 7/8" square bore with set screw. Original Weasler part. Bore: 7/8"