The V55 MODULAR profile double cylinder is ideal for front doors and provides extra security from break-ins and unauthorised access thanks to its anti-drill and anti-pick protection. The modular design means that the profile cylinder can be extended by 100 mm on the modular side. Extensions of 5 to 50 mm are available (in 5 mm increments). The double cylinder has the keyed-alike system no. 21 and comes with 5 corresponding dimple keys as well as a code card. Using this code, it is possible to cut a duplicate key without a sample key (with an electronic machine). The keys have an extra-long shoulder so that they can be easily used together with a security escutcheon. The large key head makes the key easy to hold and use.