This is a A-110-3520 Auto-Lok Tractor Yoke PN: 110-3520Main Description As Following : A-110-3520 Auto-Lok Tractor Yoke PN: 110-3520 Found in Section & Models : Driveline > Driveline Components, Weasler Domestic: 35 Series, Driveline > Yokes, Weasler Domestic: 35 Series Associated Items : A-13004020 Also This is An Aftermarket Product And : 35R Series Tractor Yoke. 1-3/4" 20 spline Safety Slide Lock Yoke. Bore: 1 3/4" - 20 Spl. Series: 35R/2200 Type: Slide Collar