Quick update as it's been a while....
First off, this tool although cheap has saved me so much time restoring valves, bolts and almost anything small and rusty.
IMG_0433 by drpoyser, on Flickr
Valve Before.
IMG_0435 by drpoyser, on Flickr
Valve After.
IMG_0436 by drpoyser, on Flickr
Here...