This is a A-800-1416 Round Bore Implement Yoke (w/ Keyway & Set Screw) PN: 800-1416Main Description As Following : A-800-1416 Round Bore Implement Yoke (w/ Keyway & Set Screw) PN: 800-1416 Found in Section & Models : Driveline > Driveline Components, Weasler Domestic: 14 Series, Driveline > Yokes, Weasler Domestic: 14 Series Associated Items : New Also This is An Aftermarket Product And : 14 Series Implement Yoke. 1" Round bore with 1/4" standard keyway. Original Weasler part. Bore: 1" Standard Keyway: 1/4"