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. Universal handling fits both right handed and left handed doors. Comes with 2 keys. Latch has 3 interchangeable faceplates round corner, square corner, and drive-in collar ANSI/BHMA grade 2 certified. Latch has adjustabled backset 2-3/8″ to 2-3/4″ to fit all standard door preparations. 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.