Featuring SmartKey Security, which protects against advanced break-in techniques and allows you to re-key your lock yourself in seconds. For use on exterior doors where keyed entry and security is needed Fully reversible interior lever; fits both right handed and left handed doors Latch has adjustable backset 2-3/8" to 2-3/4" to fit all standard door preparations" Easily installs in minutes with just a screwdriver