Wow, those look pretty good.

I would argue that you bought that tensioner instead of made it. Very nice.
The feeler looks a bit short though. You don't have problems picking deeper locks? Also, I would add a handle or something to make it a bit thicker where you hold it. that way it won't be slippling/twisting out of your hand. But, if it works now, good.
I hope you make some more. You got good craftmanship.
-Rob