TROIKA Keyring PATENT CHAINKeyring with chain, round, incl. carabiner , 6 exchangeable rings, brass, metal, chrome plated, matt, silver-colouredAttractive, multifaceted and reliable! Some keyrings are like lifelong partners ... you simply won’t want to separate from PATENT CHAIN! In its solid metal body, you can insert or remove lots of keys with just one click. So you get exactly the key you want in your hand. And by the way – thanks to the PATENT principle, your fingernails won’t be in danger of breaking.