Size: 6.2cm x 3.5cm retractable reel 2pcs up to 60cm retractable cord each ID reel has a keychain and a plastic buckle. Unique design elastic cord of reasonable length and easy to use. The key fob is an ingenious addition to the ID clip. .A notice: The retractable keychain is lightweight and easy to stretch. It is very durable and strong for light objects, the function of the design is only applicable to light objects, such as Id Card Badge input protection card and keys, (less than 50g is recommended), please do not use heavy objects or pull them by gravity to the end , This can easily damage the telescopic spring. .Badge key badge holder Suitable for multiple security points for keys badges. Good weight, sturdy construction, can be attached to your pocket, belt loops or top.Solid and Safe - It is made of Zinc Alloy, hard plastic and strong sturdy retractable cord, the extension cord works perfectly every time. The dual clip system gives you peace of mind that you won't lose your ID and keys. .