PREMIUM MATERIALS: Made of zinc alloy. hard plastic and sturdy retractable cords. these badge tethers are durable. loss-proof and not easy to break. Excellent quality can greatly improve the service life of high-performance keychains. MORE CONVENIENT: The retractable key chain length smoothly extends up to 70cm. which helps you open the door quickly and easily without pulling out the key. And it is light weight and easy to carry as well. GOOD FASTENING: The D-shaped climbing hook and clip on the back is easy to fasten hang. You can use it with the clip on belt buckles. lanyards. backpacks and other portable bags. BEARING CAPACITY: The keychain supports about 220g. which can ensure the safety of keychains. ID cards and other items. The reel has good flexibility and can be used for many times. WIDELY APPLICATION: The retractable keyring can be widely used in office. home. and outdoor activities like fishing and hiking. work well with ID card. entrance card. keys etc.