Mini-Bak is the ultimate in convenience. The 36" retractable cord lets you extend your card to where it's needed. Then it gently pulls the card back so it's secure and handy. Perfect for card reader and proximity systems, Mini-BakA(R) is compact (less than 1 1/4" diameter) and fits comfortable on the wearer's belt. It is tested to 180,000 pulls. Made in the U.S.A. The "Twist-free" end attachment prevents the badge from spinning, and keeps the badge in a front facing position. The closing mechanism firmly secures the badge or proximity card and will decrease the possibility of the card easily being detached, which results in lost or misplaced cards. A full 36" 3-strand nylon cord (20 lb. breaking strength), the same specification as parachute stitching cord approved by U.S. Military. The spring retraction mechanism tested to over 180,000 cycles without failure. Backed by a 1 year manufacture guarantee in U.S.A. & Canada. Available in red, white, blue, black, and gray colors. Belt clip, jewelry pin, and swivel clip mount. 3 Quality grades of engineering thermoplastics. Spring retraction force of 2 ounces. Stainless steel clock spring Stainless steel and nickel-plated steel fittings 1 A 1/2"diameter x 3/8" thick, weighing less than .5 ounces All models can be customized with personalized logos. Great as a promotional product. A company logo can be placed on the front of the unit. Ideal for business that wears identification badges or uses security access systems. Access Security Systems are becoming a familiar sight in today's businesses and our units enhance these types of systems. Which ever state-of-art access control technology is employed, this unit can certainly be utilized.