Blade holder support shaft Shaft inside the blade hub support for MURRAY lawn tractor mowers Mowers: 38" - 40" - 42" - 46" - 48" - 50" LT - 52" GT models Models 312006X190 312006X51A 312006X66A 312006X78 312006X78C 31201X51A 31206X50 465602X8 46569X6 46569X71 46569X92A 46570X6 46570X71 46570X8 46573X92 46577X6 46581X92 52370x92A 52431x92A 46500x92A Length: 179.8 mm Part No.: 22-549 450044 Original part no.: 774091 - 94129 - 95402 - 94129MA MU094129 - 094129 AS