Historical Emporium Minature Brass Divers Helmet Keychain Brass Cast and Finished in 100-percent Brass With a Copper Tone Accent Imported This vintage-inspired key ring is a miniature replica of the iconic Mark V diving helmet The carabineer clip unscrews to accommodate a boatload of keys A nod to the noggins of 19th century underwater adventurers, this unique accessory is quite a conversation piece Plus, if boredom sets in on long voyages, the hollow helmet can be set atop a fingertip for an impromptu puppet show See our storefront for more items