I went to the hardware store and bought a bolt with a 19mm head on it. Then I bought two nuts for it and made a little jam nut thing out of it. Then, I stick the head of the bolt in that side and use a socket on the nut, good luck finding a 19mm hex!
The other side is 12mm I think... That I was able to find at sears.
You can use a reducer on the 1/2 drive torque wrench, just remember that will be your weak link. IF you can find the half drive stuff I would use it for high torque situations.
