Brass Plated Keyed Deadbolt LockThe Defender Security Single Cylinder Brass Keyed Deadbolt easily flush mounts on the inside of your door. This die cast lock has a spring loaded bolt activated with a key. California residents see Prop 65 WARNINGS Used to add additional security to doors and help in preventing a forced entry Mounts on the inside of the door Spring loaded bolt Diecast construction with bright brass Three keepers for different mounting on inswing or outswing doors All