The chain is made of tough chrome plated steel for a hardcore style extra long wallet chain. Chain is Black color, It is not Zet Black. This color is GunMetal. Strong chin is 4mm thick and 9mm Width for superior strength. Straight line Length overall 17 inch ( Chain length 13.5 inch with both side Key Ring , Lobster hooks ) Wallet Chain total weight 3 oz. Easy to remove and convenient for use. Stylish Wallet Chain is Loved by a Wide Range of Users, Including the Public, as well as Those Who Have Keen Eyes for the Latest Trends, Such as Rockers, Hip Hop Musicians, Bikers, Truckers, or Motorcycle Riders, Who Often Use the Product as Their Fashion Accessories. The wallet chain is made of tough chrome plated steel for a hardcore style extra long wallet chain. Use this chain as a standard jean chain to add style to any pair of jeans or attach the clasp end to any wallet with an eyelet to protect your money and identity. This wallet chain features a beefy, lobster claw clasps to attach to your belt loop, a durable steel clasp to attach to your wallet or belt loop and a rugged key hoop so you can also attach your keys, keeping all your stuff protected. Warm Tips: 1. Please make the product far away from the fire, toxic, corrosive, and chemical things. 2. In order to make the bag chain keep bright, please using soft cloth wipe it.