About this itemAnti-collision: The lock cylinder has unique anti-collision protection and does not use a fixed pin. This ensures a very smooth rotation of the cylindrical key while preventing the entry of male and female keys. Anti-drilling: the 80 mm door lock has four hardened steel anti-drilling pins on each side. All movable pins are nickel-plated hardened steel Anti-pick: The cylinder lock is designed with an anti-pick system, with at least three anti-pick pins on each side, which makes it extremely difficult for ordinary thieves to pick the lock .Wide range of applications: suitable for many types of doors, including wooden doors, metal doors, UPVC doors, patio door locks, European aluminum doors or composite doors.6 pin cylinder : brass finish, 40/40mm (80mm). 8 standard keys included