The Schlage Bright Brass Single Cylinder Deadbolt and Keyed Entry Bell Knob is perfect for use on exterior doors, with the deadbolt adding an extra layer of security to the knob. The Bell knob has an understated look that seamlessly blends into virtually any d??cor, and it looks especially classic when finished in Bright Brass. Plus, it???s been designed and tested with strength and durability in mind.