Designer style and superior security with this Kwikset Signature Series product. For use on exterior doors where keyed entry and security is needed. Featuring SmartKey Security, which protects against advanced break-in techniques and allows you to re-key your lock yourself in seconds. SmartKey Security re-key technology is compatible with Kwikset (KW1) keyway or (SC1) keyway options. Deadbolt operated by key outside and thumb turn inside. Comes with 2 keys. Deadbolt Latch has 3 interchangable faceplates - round corner, square corner, and drive-in collar, ANSI/BHMA grade 1 certified Latch has adjustable backset 2-3/8" to 2-3/4" to fit all standard door preparations. Includes round deadbolt strike. 1 inch deadbolt throw. Locking mechanism functions with turn piece on the interior of the lock. Easily installs in minutes with just a screwdriver. Lifetime mechanical and finish warranty.