The door cylinder is the heart of every door and is a top priority for burglary protection. Despite its importance, many locking cylinders with outdated technology are still installed. Today, modern door cylinders are high-quality products with versatile effective quality characteristics. The door double cylinder ABUS D6X combines safety with comfort: on the one hand, steel pins in the cylinder provide tapping protection, and on the other hand, opening and closing the cylinder is convenient by means of reversible keys with dimmers. With the emergency and danger function, the lock cylinder can be easily closed from the outside, even if there is another key inside. Advantage for multiple users: there are already five keys included. With the attached code card, additional keys can be easily made.