AMERICAN & EFIRD-Rayon Super Strength Thread Variegated Colors. Premium twisted rayon embroidery thread is made with brilliant colors and has a silky, lustrous appearance. Soft, smooth feel. Made from high tenacity rayon to give the thread a higher sheen than polyester. This package contains one spool with 700 yards of rayon super strength thread in variegated colors. Comes in a variety of colors. Each sold separately. Imported.