This center post size is very popular with many import tire machines like Harbor Freight or many other places may carry. But please check your size to be sure as some machines do not use this size. Sorry, this item is no longer available!
I recently got the Harbor Freight tire-changing device (parts 34542 & 42927), and I've spent the night trying to figure out how to use it. The instructions are horrendous. I haven't seen the Tire Wizard's instructions, but I bet these would rival those... it's like they omitted ...