Extend the usefulness of the Mega hammer tool by including additional makes and models that are able to be serviced. Saves time and money. Prevents damage to axle. Services F250 4 X 4 and F350 4 X 4. Used with the Mega hammer, removes seized hubs and rotors Use the optional 8 - Bolt head with your MEGAHAMMER tool to service Ford Super Duty F250/F350 4 X 4's. 8 diameter; 26.45 lbs.