High Quality:- Premium Oval Shape Winder: High quality ABS shell + Japanese high tensile steel sheet + zinc alloy + 0.45 strong nylon thread Modern design:- The winder is very simple in design. Keep your keys, your ID card, your transport card, your security pass or your name tag in one place with the yoyo key/badge holder Flexible to install:- With metal clip for hanging on the belt or to a bag; and have a snap hook for the belt or bag so you always have your badge or keys close at hand. Both versions take care of your clothes - neither your belt nor your pants will be damaged Retractable and Practical :- The keychain has a tear-resistant cord that can be extended up to 68.5 cm. Automatically again, a return damper ensures a rewind problem. The retractable retractor allows you to easily reach a door lock or scanner without removing your keys or smart tag. No more searching for them in your pocket or bag Small but mighty:- Product dimensions (L x W x H)10.7*3.2*1.4cm, Weight:22.9g. The reinforced spring holds your bunch of keys weighing up to 100 grams securely. Can easily be combined with all durable badge holders with perforation. It is very useful in some professions, such as workers, office workers, nurses, for trade fairs or exhibitions.