All metal zinc alloy construction with fiber cord makes the most durable retractable badge holder, tested under more than 100,000 pulls. Package includes 2pcs retractable id badge holder with reel clip and ID strap, last forever. Max loading weight is 150g/5.3oz or 8 keys compares to 85g/3oz or 4 keys of other items on the market. Comes with key ring and perfect as retractable key chain. 27.5" UHMWPE fiber cord which is the strongest man-made fiber in the world. 1.4x stronger than Kevlar, 5x stronger than Nylon. Ultimate bendable and non-breakable than steel wire. Unlock doors and access office is a breeze with this retractable badge reel. The clip is screw-fastened in the back side so no need to worry that it will fall off.