Links are 12mm Long by 9mm Wide. Oval Charm Link Silver Tone Chain Necklace Large 18 Inch Chain with a Patterned Design on a Flattened Oval Link. This Antique Silver Tone Chain can be used with Charm Link Chain Bracelet. The Chain is a Base Metal Chain with a Palladium Plating. The Necklace Clasp is a Lobster Clasp.