Nineteen strands of wire make up the core of "Beadalon 19". This is a more flexible wire than the Beadalon 7 wire. Use it when you want a more "drapey" look - or when you are using very small, lightweight pearl beads. The thin diameter (.012 inches - or 0.3mm) is suitable for most pearls or small gemstone beads. It is offered here in the basic stainless steel color (silvery grey) that Beadalon calls "bright".