This teeny-tiny pocket knife is one-of-a-kind. Shaped like a sardine, it features a gold and silver design that packs a punch. But don't take it on a plane - just a friendly heads up! Gold: Hanging from a 30" brass chain with an adjustable option so you can wear it shorter with your other favorite necklaces. Silver: Hanging from a 26" stainless steel chain with clasp (not adjustable).