This is a A-113-3506 Auto-Lok Tractor Yoke PN: 113-3506Main Description As Following : A-113-3506 Auto-Lok Tractor Yoke PN: 113-3506 Found in Section & Models : Driveline > Driveline Components, Weasler Domestic 80 CV: 35 Series, Driveline > Yokes, Weasler Domestic 80 CV: 35 Series Associated Items : New Also This is An Aftermarket Product And : Original Weasler part. Bore: 1 3/8" x 6 Spl. Category: 4 Series: 35