Number Tags & Key Rings Set: 50 pieces of key tags and 50 stainless steel rings, wear-resistant and durable. Suitable for organizing and sorting keys, luggage, lockers, gym lockers, and more. Material: Numbered key tags are made of high-quality aluminum alloy, waterproof and rustproof, wear-resistant, sturdy and durable. Smooth surface that won’t harm hands. Practical Number Keyring: Metal key tags with key rings help easily organize or sort keys, dormitory keys, gym keys, luggage, and more. Also useful as labels to number items for identification. Size: The keychain numbers are blue, the tag's diameter is 3 cm, and the steel ring's diameter is 2.8 cm. The key tags are lightweight, and the digital numbers are clearly marked for easy identification. Wide Application: Numbered key fobs are suitable for hotels and guest houses, gyms, indoor and outdoor pools, warehouses, restaurants, and more. Ideal for luggage storage and item identification.