Downtown Low Profile Satin Brass Single Cylinder Square Contemporary Deadbolt Featuring SmartKey SecurityStep up to designer styles and superior security with Kwikset Signature Series products. This single cylinder deadbolt is operated by a key on the outside or a thumb turn on the inside. The textured finish of Satin Brass gives it a refined, rustic look. Features: Designer style and superior security with this Kwikset Signature Series product. Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit. For use on