... Pin Type Tractor Side Connection: 1 3/8" 6 Spline MPN: R10122 Implement Side Connection: 1 3/8" Round Bore PTO shaft, Drive ... . 2:We can provide series 1, 2, 3, 4, 5, 6, 7, 8, 9, also as per customer's diagrams or ... samples. 3:tube:Lemon profile tube, star profile ... your satisfaction. 35 HP Series 1 PTO Shaft 1 3/8" 6 Spline and Shear Pin Clutch