This is a A-101-3520 Safety Slide Lock Tractor Yoke PN: 101-3520Main Description As Following : A-101-3520 Safety Slide Lock Tractor Yoke PN: 101-3520 Found in Section & Models : Driveline > Yokes, Weasler Domestic: 35 Series Associated Items : A-13004020 Also This is An Aftermarket Product And : 35R/2200 Series Safety Slide Lock Tractor Yoke. 1-3/4" bore 20 spline Yoke. Original Weasler part. Bore: 1 3/4" - 20 Spl. Series: 35R/2200 Type: Slide Collar