COV now has all Brass GGTB tube only for sale. Finally another brass TB - beautiful. They only have a few for now so get one quick. If you dont want a brass one, then there are still all SS avail. Actually - get one of each. Great for 3.7, 6 or 7.4 volts, Penelope is awesome on them along with Odyss drip mode.
http://i1100.photobucket.com/albums/g409/covbruce/2tone.jpg
http://i1100.photobucket.com/albums/g409/covbruce/2tone.jpg