【Keyed Different+MK】A package contains 10 sets of telescopic cable locks with different keys and a master key For notebooks, monitors, and desktop mainframes with 3*7mm security keyholes 【Self-rolling cable】 The maximum stretching length can reach 1800mm (6ft). The minimum rebound size is 100mm (4in).This lock is exquisite and compact, with military quality, easy to carry and save space 【With master key】Laptop lock provides two keys and master key, 10 locks keyed differently, equipped with a master key for easy management and emergency unlocking 【NOTE】When the master key is used, it requires a greater thrust than a conventional key to open. The master key can only open this ASIN lock, cannot open other ASIN locks LORADAR Retractable Computer Lock includes 10 sets of cable locks and a master key