Beadalon Crinkle Wire 7-Strand .018-Inch (.45-Millimeter) Diameter 15-Feet/Pkg, Bright
Nylon coated wavy stainless steel crinkle wire.  7-strand .018-inch (.46-millimeter) diameter.  Includes 15 feet per spool.  Works well with crimp bead #1 or tube bead #2.