Nothing shows off your inner tough nature like a necklace made from industrial hardware. The Worlock Necklace set includes a 2 strand chain necklace and an o-ring chain necklace with 2 lobster claws. Silver plated iron. The O-ring necklace is 15" long with a 3" extender. The Longer set is 18" (add a 2" drop for the longer chain" with a 3" extender. The o ring is .5" across.