This is a A-101-7021 Tractor Yoke, 1 3/8" - 21 Spline w/ SSL PN: 101-7021Main Description As Following : A-101-7021 Tractor Yoke, 1 3/8" - 21 Spline w/ SSL PN: 101-7021 Found in Section & Models : Driveline > Driveline Components, Walterscheid P SERIES: P600, Walterscheid W Series: 2600, Driveline > Yokes, Walterscheid P SERIES: P600, Walterscheid W Series: 2600 Associated Items : New Also This is An Aftermarket Product And : Tractor Yoke, Spline. 1-3/8" 21 Spline with Safety Slide Lock Weasler alternative to original part.