Enhanced Door Security: Enjoy enhanced security without expensive handle upgrades or additional security equipment with this thumb-turn Euro cylinder door lock. It features a peanut-shaped thumb turn on one side and a key-operated lock on the other. The high-quality 6-pin lock cylinder has anti-pry, anti-drill, and anti-bump protection, giving you peace of mind and ensuring your home's safety.Patented Anti-Bump System: The keyed door lock features a unique anti-bump protection feature that does not use a trap pin. This ensures that the cylinder key turns exceptionally smoothly while preventing bump key entry.Durable Anti-Drill Design: These 80mm door locks have four hardened steel anti-drill pins on each side. All moving pins are made of nickel-plated hardened steel with a hardness of at least 50 HRC to ensure extreme durability and prevent intruders from using other tools to gain entry.Secure Anti-Pick Design: The cylinder lock features an anti-pry design with at least three anti-pry pins on each side, making it very difficult for the average thief to pick the lock. Please see the pictures for full product dimensions.WIDE APPLICATION: These door locks are suitable for all door types including wooden doors, metal doors, UPVC, patio door locks, French doors and composite doors. They can be used as replacement locks or where new installation is required. European door handles and European window frame locks must be purchased separately. This item should be installed by a locksmith or trained personnel.