Thin Walled Rubber Jewelry Tube is used as a core material for kumihimo projects when you want to feed memory wire or Soft Flex wire through the braid after you take it off the disk. The outside diameter is approximately 2mm and the inside diameter is approximately 1mm. Sold by the yard.
The 1mm inside diameter is critical to fitting over the memory wire. Different brands of memory wire are slightly different gauges, but we have tested this Thin Walled Rubber Jewelry Tube and it fits over the Bead Smith brand memory wire that we sell on this site.