ER Nurse Halloween Bottle Cap Retractable Badge ID Holder. ER nurse halloween bottlecap badge reel is a great item to hang your work or school Id's from. Badge is 1.25 in diameter. The badge also is a Retractable badge with your choice of either a clip or a swivel alligator clip Pictures 2 is a slide clip picture 3 is an alligator clip. The retractable cord is 24 inches Badge reel says ER Nurse on it. The color of the badge reel is white.