Schlage B60 N 622 Deadbolt, Keyed 1 Side, Highest Residential Security, Matte Black, IDEAL USE: Deadbolt thrown or retracted by key from outside or by inside turn unit; perfect for use on entry doors with 2 bore holes as additional layer of security; includes lockset and 2 keys, ADVANCED SECURITY FEATURES: Ideal for front doors and exterior entrances where security and style are needed; includes industry-leading 1-inch deadbolt with hardened steel spinning pin, anti-drill plates and anti-pick pins to help protect against attacks, CERTIFIED HIGHEST SECURITY: Premium metal construction and quality craftsmanship for everyday strength and peace of mind; Grade 1/AAA certified BHMA rating for Security, Durability and Finish, EASY INSTALLATION: Self-aligning screw holes make installation hassle-free; everything included to upgrade existing double bore hole doors, such as exterior doors with keyed security, yourself with only a screwdriver; fits right and left handed doors, HASSLE-FREE FIT: Universal latch slides easily into place without tools to fit standard doors with 2-3/8"" or 2-3/4"" backset; fits door thickness 1-3/8"" to 1-7/8""; includes integrated strike reinforcer with 3"" screws to help protect against kick-in attacks, ,