This is a A-800-0620 Round Bore Implement Yoke (w/ Keyway & Set Screw) PN: 800-0620Main Description As Following : A-800-0620 Round Bore Implement Yoke (w/ Keyway & Set Screw) PN: 800-0620 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 : Original Weasler Part. Bore: 1-1/4" Centerline To End: 2-1/2" Keyway: 1/4"