Heavy Duty: The retractable keychain comes with 1mm dia stainless steel cord retraction force up to 10 oz, strong enough to support the weight most of your keys without sliding down all the time. Multi-Purpose: The retractable keychain comes with a multi-purpose carabiner. It is durable, safer and also can be uesd as a bottle opener and wrench. Can bring more convenience for you. Reliable: The string of the retractable keychian is durable and stong enough to retract, will never lose your keys and your badges to ensure your personal information security. Convenient: The retractable keychian extends 60cm, more than enough for you to stretch out your hand. Allows coveniently open doors and gives a instant access without a tangle of cord. Packge Include: You will recieve a packge of two heavy duty retractable keychain with multi-purpose metal carabiner. Each product is strictly tested before send to you.