Pro RMK bar ends

I'm looking to do a new setup on an old machine and like the looks of the bar ends on the new RMK's. However I can't find out the diameter of the ends that fit into the bars. I don't want to but some if they won't fit into my bars. Can anybody please help?

The new style ends that fit the Protaper bars (2010-13) have a smaller O.D then the previous years of 2009 & down.

These PT bars are thicker compared to the older Polalris bars. Hopefully that helps ya.

pt# 2872482-070 2008-previous
pt# 1823339-070 2009-2012