Durable and stable: the D6X is a good choice if you want to equip the door of your house or apartment with a robust cylinder lock. This cylinder lock features special pins inside that make it difficult to bypass. The emergency and danger function ensures that the door can be opened or closed even if the key is already on one side. The bonus: this cylinder lock comes with a code card. By referencing the code number on it, you can order additional keys and cylinders from the specialized supplier.