This is copper-plated spun thread suitable for both sewing machines and hand sewing. The Japan Chemical Fibers Inspection Corporation (Nissenken) has confirmed its antibacterial and antiviral performance, exceeding JIS standards. ■ Specifications ・Size 50 ・Copper color ・Small spool, approximately 22-30m (random) ・Thread for materials (not a finished product) ※ Length is a random specification. ※ Due to the copper plating, the color may change depending on the usage environment.