do you mean 5/16 to 1/8? like gauge fittings? i get mine at ace or true value
you guys think this will work? the 5/16 end looks like an an fitting.
http://www.usahardware.com/inet/shop/item/80780/icn/20-499277/anderson_metals/54048_0502.htm
if not i did find a 1/8 male to 5/16 female(Edelmann 124520) then i can just get a 5/16 nipple.