This is a A-801-0606 Spline Bore Implement Yoke (w/ 1/4" Pin Hole) PN: 801-0606Main Description As Following : A-801-0606 Spline Bore Implement Yoke (w/ 1/4" Pin Hole) PN: 801-0606 Found in Section & Models : Driveline > Driveline Components, Weasler Domestic: 6 SERIES, Driveline > Yokes, Weasler Domestic: 6 SERIES Associated Items : New Also This is An Aftermarket Product And : 6 series implement yoke, 1-3/8" 6 spline with 1/4" pin hole. Original Weasler part. Bore: 1 3/8" - 6 Spl. Pin Hole: 1/4"