High Quality Material: Made from high quality zinc alloy which makes the expandable keychain sturdier and more durable; the maximum load weight of this retractable keychain is about 150g or 8 keys. Retractable Wire Rope: Retractable Keychain is made of durable stainless steel wire rope which does not s not wear or break easily. The steel wire cable can be extended up to 90cm, which makes it easy to unlock or access ID cards and make daily life much easier. Easy to use:Designed with a spring-loaded keychain hook for easy attachment to their belt loop, purse, backpack and more, extra convenience for your life or travel. Wide range of applications:The hook retractable keychain is designed to not only hang your keys, but the included clear badge holder also hangs ID cards, badges and more. The keychain is suitable for all industries, both men and women. Perfect for nurses, medical and office staff, security guards, teachers, employees, etc.