Omega Silver Necklace Choker Choice of 16 inch 18 inch 20 inch Silver Round Omega Choker Necklace with anti-tarnish sealer 16 inch (petite) 18 inch (average) 20 inch (large) Has A Nice Lobster Claw Clasp Perfect For All Charms and Pendants 2mm (1/8 inch thickness) Flexable Anti-Tarnish Finish