Kwikset 817 UL 26D SMT RCAL RCS Key Control Single Cylinder Ul Deadbolt Featuring Smart Key, Satin Chrome 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 Latch includes round corner faceplate Ansi/bhma grade 2 certified