This is a A-804-3524 Square Bore Implement Yoke (w/ Set Screw) PN: 804-3524Main Description As Following : A-804-3524 Square Bore Implement Yoke (w/ Set Screw) PN: 804-3524 Found in Section & Models : Driveline > Driveline Components, Weasler Domestic: 35 Series, Driveline > Yokes, Weasler Domestic: 35 Series Associated Items : New Also This is An Aftermarket Product And : 35 Series implement yoke. 1-1/2" square bore with set screw. Original Weasler part. Bore: 1 1/2"