Kwikset 258 Downtown Low Profile Square Contemporary Deadbolt featuring SmartKey in Polished Chrome Designer Style and superior security with this Kwikset signature Series product For use on exterior doors where keyed entry and security is needed Featuring smart key re-key technology; re-key the lock yourself in seconds in 3 easy steps Deadbolt operated by key outside and thumb turn inside 6-Way adjustable latch, including round and square faceplates and drive in collar