Steel Memory Wire is a carbon steel wire that has been plated with silver, antique brass color, and gold color. It is made into coils, and sized for rings, bracelets, and necklaces. The diameters are given in ranges to account for the variations in the manufacturing process. This wire is ideal when you want the shimmer and shine of a plated wire. This variety pack of memory wire features 4 assorted sizes in a bright silver plated finish.