Originally Posted by fretmelter
hmmmmm....well it is 3 bucks. can u tell me anything tht is about the same size to maby get an idea of the size?
5/16" is the bore size normally used for an autococker, IIRC. And you want want that's dual acting - not spring returned. Your easiest bet is probably just to cruise the B/S/T for a used one.