Durable zinc alloy keep this keychain never rust.Size approx. 3.3 x 0.9 x 0.31 inch; Key ring diameter: small one is approx. 0.9 inch, and the large one is approx. 1.26 inchesThe key chain bottle opener can open your bottle cap easily; Moreover, there are 2 holes on the keychain which can add 2 extra key rings to keep your keys organizedPACKAGE: includes 2 pack keychainsSpecifications:Material: Made of zinc alloy.Size: Key ring diameter: small one is approx. 0.9 inch and the large one is approx. 1.26 inches.Package includes:2 piece keychainFeatures:1.Concise and elegant design, polished and good quality.2. The rings are plain round steel and very strong. Never rust; even if putting it in the water or saline water.3.Good gift for father's day, graduation, bachelor party, corporate events, Christmas, or someone special.