Security with 5 mm rope is provided. Resistant up to 450 kg. The outer surface of the rope is covered with white color PVC. It is enough to press to lock, the key is not used. Used to open key. Single type key is used. All locks are unlocked with a key. With this feature, there is no key confusion. Installation is extremely easy. Mounted using smart screws. Window clearance is within the scope of the Occupational Safety Act.