I attempted to take apart the stub axle and rear hub the other day. I found that I needed to buy several more tools: a 10 mm long hex bit socket, a 36 mm deep socket, a 30 mm socket and a puller. Since I have a strict policy of no lonely each was bought in a larger set.
I probably could have tapped the rear hub off with a rubber mallet, but I didn't want to risk damaging the bearings. As can be seen in the pictures above, the puller has a pointed shaft which is placed in the dimple at the end of the axle. The three arms are then hooked under the hub's lip. This puller is nice because each arm has multiple ratchet positions which keeps the arms from flopping all over the place when you're trying to set it up. As you tighten the nut even pressure pulls the hub off of the shaft.