3" white plated brass necklace extenders made with 2.8mm curb chain. White plating is typically an imitation rhodium made of copper, tin, zinc, and/or nickel. White plate is the "silver" color most often seen on base metal jewelry and findings. Use these necklace extender findings for necklaces with a spring ring or lobster clasp. Useful to have on hand for customers who prefer a longer necklace than your stock size. Extend a 16" choker to a 19" necklace. Includes spring ring or lobster clasp.