Clutch: Shear Pin Type Tractor Side Connection: 1 3/8" 6 Spline MPN: R10122 Implement Side Connection: 1 3/8" Round Bore PTO shaft, ... series 1, 2, 3, 4, 5, 6, 7, 8, 9, also as per customer's diagrams or samples. 3 ... 7:meet ISO9001: 2000 quality system and QS9000 standard. 8:high quality and competitive price. 9:Delivery:Prompt delivery ... . 35 HP Series 1 PTO Shaft 1 3/8" 6 Spline and Shear Pin Clutch