Package includes 3 retractable key rings + 3 ID card holders. The size of the card holder corresponds to the size of the credit card. It is very durable and firm for lightweight items. The design only applies to lightweight items such as ID cards, access control cards, and keys (less than 50g is recommended).Robust and scratch-resistant: It is made of zinc alloy, hard plastic, and a strong, durable retractable cable, not easy to crack, for maximum transparency and durability. The dual-clip system gives you peace of mind that you won't lose your ID and keys.Retractable Keychain Set: The retractable keychain is lightweight and stretches easily. Please do not use heavy objects or pull it to the end due to gravity, as this can easily cause damage to the telescopic spring. The cable can be up to 65cm long. .Widely used unisex, perfect for any industry, easy to attach to belts, bags, money belts, backpacks, or anywhere you like. The card holder can be used for ID cards, ID cards, credit cards, documents, photos, bus tickets, nurse accessories, papers, or ID cards, making it an ideal choice for students, office workers, etc.