The Round Mini-Bak® with I.D. Badge Holder is ideal to keep I.D. Badges handy and ready for everyday use. The Mini-Bak® is tested to over 1-million pulls and is the standard of excellence in small retractable reels. The 24" / 60cm Heavy Duty nylon cord is capable of carrying 4 oz./ 112 g. which is approximately 6 standard keys.