This is a A-102-3505 Quick Disconnect Tractor Yoke PN: 102-3505Main Description As Following : A-102-3505 Quick Disconnect Tractor Yoke PN: 102-3505 Found in Section & Models : Driveline > Driveline Components, Weasler Domestic: 35 Series, Driveline > Yokes, Weasler Domestic: 35 Series Associated Items : A-13002021 Also This is An Aftermarket Product And : Original Weasler part. Bore: 1 1/4" Hex.