Satin cord, also named rattail® or rat tail cord is a shiny smooth cord made of rayon with a cotton center made in the U.S.A. It is often used for the cord of necklaces, stringing beads with large holes and knotted pieces as well as for kumihimo and Chinese ornamental knotting.

Personal Note :: I use satin cord mostly as the central core of handbraided kumi cords. Since the satin cord is hidden inside the braid, I mostly use either a dark and a light color. As it is slippery, so it can be removed easily if part of the core is temporary. In addition satin cord has no elasticity, so the braid will not stretch over time. I prefer the official 'rattail' brand over other satin cords made with nylon. It drapes better.

12 colors currently in stock :: Sold by the yard
Rayon/Cotton. Made in the USA.
Size #2 :: Heavyweight approximately 2-2.5mm in diameter (also called rattail or heavyweight rattail)
Size #1 :: Lightweight approximately 1.6-1.8mm in diameter (also called mousetail or lightweight rattail)
Size #0 :: Petite approximately 1.2mm in diameter (also called bugtail or petite rattail)