[Source] Flex tubing

Does anyone out there know of a supplier of flex tubing in 14K?
Rio Grande carries sterling flex tubing for bangles, and some
years back I seem to remember someone carrying a line of 14K
flex tubing for hoop earrings and such. Now that I finally have
a need for the stuff, I can’t find it. Oy! Any leads are very
much appreciated! Kathy