It isn't a winner pro freewheel (it is an 'alpha?) but ideally you need a sun tour winner pro freewheel remover (with four drive points). An older Sun Tour two-peg remover may also work, but there are slight differences in the fit, plus if the freewheel is super-tight, there is an increased chance of damage because there are only two pegs.
If you just want to take the freewheel off to throw it away, there are destructive means of doing this.
If you just want to take it off to service the hub bearings, don't bother; you can do almost everything you need to with the freewheel on.
If you want to change a spoke on a Small Flange hub you need to remove the freewheel.
If you want to change a spoke on a large flange hub you can remove the sprockets from the freewheel body instead of removing the entire freewheel if you like.
AFAICT Park Tool FR3C is a reasonable facsimile of the sun tour tool. Several other tool manufacturers also make something that is suitable.
This photo shows some tools including the correct SunTour one

hth
cheers