dana 44 wheel bearing nut spanner socket?

[robertwb]

I'm trying to get the hub/rotor off to replace the ball joints-I have the 4 prong tool that gets the lock nut off and right behind that is a round nut with holes around it-looks like there is probably another tool that removes this nut-I tried the punch and hammer and it wouldn't budge and I don't want to screw it up

can someone confirm that there is a special tool for this and where to get one? everywhere in town here says the 4 prong one is the only tool...obviously there's more

robert