Pto Drive Hub, Flywheel Mounted ** Note: Hub is made of steel not cast and heat treated to OEM specifications.    Dim A (1): 12 Bolt Holes **    Dim B (2): 5 1/4" O.D.    Dim C (3): 4 1/4" Bolt Circle    Dim D (4): 1" Center    Dim E (5): 17 Spline Massey Ferguson Tractor 1105 1135 1155
