Kwikset - SmartKey Security Polished Brass Metal Single Cylinder Deadbolt

For over 70 years, Kwikset has been the industry leader in home security, offering trusted protection and peace of mind. The 600 series is America’s best-selling deadbolt, delivering strong security at an affordable price. This single-cylinder deadbolt operates with a key from the outside and a thumb turn on the inside, combining convenience with reliable safety.