Mudder Metal Carabiner Clip Keyring Keychain for Tile/Tile (Gen 2)/ Key Finder Carabiner clip + Key ring Material: zinc alloy (with anodized surface) Never rust; Even if putting it in the water or saline water Light weight, just 15 grams Carabiner dimension: 38mm (L), 18mm (W), 4.1mm(T); Key Ring diameter: 30mm