Clutch disc kit using 9 discs and 7 plates. For IH tractor models: 1486 serial number 26000 and up, 1566, 1568, 1586, 3588, 3788, 6588, 6788 (single speed pto); and also Hydro 186 serial number 12000 and up, 786, 886 serial number 1700 and up, 986 serial number 24000 and up, 1086 serial number 48000 and up, 3088, 3288, 3388 serial number 10385 and up, Hydro 3488, 3688, 6388, (dual speed pto)