The Weiser(TM) "Welcome Home Series" Single-Cylinder Deadbolt brings you reliable protection for your home. This deadbolt features SmartKey(TM) technology that lets you re-key the lock to work with any SmartKey(TM) key, so you can use the same key on any Weiser(TM) SmartKey(TM) locks in your home. ANSI/BHMA Grade 2 Certified, this residential-use deadbolt offers security and peace of mind. In addition, this product features Microban(R) antimicrobial technology, preventing microorganism growth on surfaces. Lifetime warranty.