Cylinder features anti-pick, anti-drill, and anti-bump protection to give you peace of mind and proper home security. The cylinder lock features an anti-pick design with a minimum of three anti-pick pins in each side, making it extremely difficult for common burglars to pick the lock. Unique anti snap features, also bump, drill and pick resistant. These door locks are suitable for all door types including wooden, metal, patio door lock,composite doors. Enhanced Security & Convenience: Thumb turn euro cylinder lock with key access outside and smooth thumbturn inside for quick, keyless locking on any front door lock or internal door lock., Manufacturer: POASDJDC