This is a A-80388BH Q.D. Pin Kit PN: 80388BHMain Description As Following : A-80388BH Q.D. Pin Kit P.N: 80388BH For 1-3/8" 21-Spline Yoke, 1000 RPM (Sizes 7 & 9) For Bondioli & Pavesi OnlyDim A (1): FOR 1000 RPMDim B (2): 1-3/8"Dim C (3): 2 REQD Stocked As: A-BP403000010 Found in Section & Models : Miscellaneous > Miscellaneous, Bush Hog (UNDEFINED): VARIOUS MODELS, Bush Hog ROTARY CUTTER: 315R Associated Items : New Also This is An Aftermarket Product And : For 1-3/8" 21-Spline Yoke, 1000 RPM (Sizes 7 & 9) For Bondioli & Pavesi Only Dim A (1): FOR 1000 RPM Dim B (2): 1-3/8" Dim C (3): 2 REQD