This is a A-102-5520 Quick Disconnect Tractor Yoke PN: 102-5520Main Description As Following : A-102-5520 Quick Disconnect Tractor Yoke PN: 102-5520 Found in Section & Models : Driveline > Driveline Components, Weasler Domestic: 55 Series, Driveline > Yokes, Weasler Domestic: 55 Series Associated Items : A-13002020 Also This is An Aftermarket Product And : Original Weasler part. Bore: 1 3/4" - 20 Spl.