Easy Water Heater Drain cock removal.

danly wrote:
Its a brass fitting with a drain cock on it, which is stripped.

Does the fitting have six sides? Use a deep well socket. If the fitting is round, use a basin wrench. If both of those don't work, you'll need to drill and use an easy out or tap threads and use a threaded fastener. Heat may be a good friend, heating the fitting with a torch will release the rust between the two metals.