The Sulky brand cotton, rayon, and polyester threads are some of the best quality threads on the market. We offer single spools of 12wt and 50wt cotton threads in a broad variety of colors, as well as spools of the Holoshimmer and Sliver Metallic thread collections (polyester laminated foil), and the Original Metallic collection (polyester wrapped metallic). Many of our thread sets feature Sulky threads!