The Tara Toggle necklace is made from thick squared off brass curb chain, fastened with a with horseshoe clasp. Material: Brass Plating: 10k Gold plated or Rhodium-silver plated. Curb chain measures: 10.57mm (.416") wide x 4.77mm (.18") thick Available in the following Lengths: 14.5", 16", 18", 20" ** EDITORS NOTE: Please measure your neck circumference before choosing a necklace length. The width and thickness of the chain makes the chain fit shorter on your neck.