Originally Posted by Brian Carlton

Something isn't right. Those chrome balls allow the head to swivel. They live inside the threaded portion. You remove the threaded portion on the head and the ball will come with the head. The ball is not installed as a separate device.

Nothing beats the grip of a pipe wrench on a pipe without flats. You might want to put a piece of material under the jaws.........they can do some real damage to the chrome...........unfortunately.