Sue Spargo Razzle RZM15 Social Butterfly 100% Rayon Thread from Wonderfil. 50 yard spool. 6-ply rayon thread that is comparable in weight to an #8 perle cotton. The thread a sturdy thread that is easy to stitch with and the rayon thread has a natural sheen which enhances the detail on wool appliqué and hand embellishment projects. The length of the variegation is short, allowing for lots of color variation is stiches. Ships free in the USA.