This is a A-102-3520 Quick Disconnect Tractor Yoke PN: 102-3520Main Description As Following : A-102-3520 Quick Disconnect Tractor Yoke PN: 102-3520 Found in Section & Models : Driveline > Yokes, Weasler Domestic: 35 Series Associated Items : A-13002020 Also This is An Aftermarket Product And : Original Weasler part. Bore: 1 3/4" - 20 Spl.