Soft Touch beading wire is constructed of micro woven stainless steel wires:

Made in the USA by Soft Flex Company Soft Touch Beading Wire is as strong as steel and as soft as silk. It is a great beading wire for designers who want their designs to last. Soft Touch lasts forever eliminating need for restringing. Soft Touch has the softest drape available on the market. This wire can be knotted. It can be used with Czech Glass Beads, Swarovski Crystal Beads, Metal Beads and Gemstone Beads. All stainless steel used in Soft Touch is 100% recyclable. The spools and clips can also be recycled - just tear off the label and put the empty spool into your recycling bin. 

Soft Touch Satin Silver Medium Beading Wire Specifications:

• Color: Satin Silver ORIGINAL COLOR
• Category: Beading Wire
• Strength Test: 26 lbs - Medium
• Number of Strands: 49
• Material: Stainless Steel 
• Diameter: 0.019 inch
• Quantity: This Soft Touch Satin Silver Medium Beading Wire is sold on a 30 ft spool