ROA nipple wrench advice

[QueensHorseman]

I picked up a ROA.  It doesn't seem to have been taken care of by the previous owner very well, not abused or even used much, but not cleaned well.  I have stripped it down and most everything seems ok now except I don't have a nipple wrench or anything small enough in my tool box to fit the hex at the base of the nipples.  The nipples themselves seem to be in good shape but I would like to remove them for a full clean and to ensure they don't seize in place.  Any suggestions on where to get such a small wrench?  I looked at a nipple wrench at a gun show recently but it was for a musket and seemed too large.

I've been researching ROA loads and will start with .457 balls.  I have Geox 2f and Olde E 3f for fuel and will likely start at 30 grains by volume.  Only thing left is to make up some felt wads, lubricated with spg.

Thanks for any help you can provide as this is my first experience with cap and ball. 

[Pettifogger]

Go to Sears, Home Depot, Ace, etc., and buy a 3/16 nut driver.  Looks like a screwdriver with a socket end.  Works great and you'll never need another.

https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FNut_driver&ei=hcczVdGlBoftoATEhYHoBA&bvm=bv.91071109,d.cGU&psig=AFQjCNHULIQ5tLgfUx_KlPwrCaghi2Rohg&ust=1429543188517812

You want one like the red one.  The removeable socket type won't fit.

[QueensHorseman]

Perfect and thanks.

[Pappy Myles]

I use one of the craftsman nut driver,  its become part of my kit.
I also picked up on ebay a ultrasonic cleaner for cheep.  That after a shoot, I drop the cylinders in with water and dish soap.   after 2 5 minute cycles, they come out looking brand new.