Soft Flex Beading Jewelry Wire This spool is stainless steel with a clear nylon coating. The second photo shows color. The color is original satin silver. The length is 100 feet (30.48m). The diameter is medium at .019 inches (.048cm). The number of strands is 49 which is the softest drape. The test strength is 26 lbs. Use with pearls and seed beads. Manufactured in the USA.