These are a premuim Blade. They start as Polish Brass material. There polished and plated, Copper, Silver, Gold and 50/50 Gold/Nickle. The Copper has a Polyurethane finish added to stop any tarnishing or finger prints. The Rainbow painted surface is also Polyurethane coated to protect the painted surface for a longer life.Your Gold and Silver finish have a much brighter flash than a Polish Brass or Nickle finish. They work well Salmon fishing with ths 360 spin and dodge combination, trolling set up.