METAL 18k Gold Filled SIZE 16" Square link chain + 15' ball chain + 3' Extender DESIGNER NOTE Two Necklaces in one are what you've been waiting for all this time. The most popular square link Necklace, mixed with featured gold filled balls throughout the chain. It's a perfect combo for any outfit. Wear it simple or mix it with a longer necklace to have the perfect layering set.