Extendable steel cableThe extendable stainless steel wire cable is highly resilient due to the hardened material and is protected against corrosion by the additional anti-rust coating. Despite the stability and longevity of the drawstring, the flexibility and pliability are retained. Use card chips or ID holders without hindrance. Over and over again. . Extra strong spring keeps your bunch of keys absolutely secure up to 100 grams. Card memory generation II and ideal for keys, company ID cards, ID cards, event passes, trade fair ID cards, company ID cards, students, office workers and more. Multipurpose Upgraded Hook Not only allows you to attach keys and ID cards, but also can be used as a bottle opener and wrench. . responsibleEach product is strictly checked before shipment to ensure that every customer can use it properly. So please buy with confidence. .