Quoted from Mark_in_PA:Bummer they don't appear to be ball end.
Yeah, I have the Craftsman T-handle standard set with ball-ends. For $2, just get that set
http://www.sears.com/craftsman-7-pc-standard-t-through-handle-ball/p-00946383000P?rrec=true
You won't need the metrics for common pinball tasks anyways.