This product fits the below machines
Multicut 460
Stubble master 500, 730
Multicut 620
Multicut 630
Multicut 470
Mulitcut 820
1000RPM version replaces part numbers 5770419, 5760820
Original Spearhead/ bondioli & pavesi Gearbox
Y8191074FM
The above part number will also fit a McConnel SR460 and SR620 flex wing rotary topper