This pair of Keyed Alike traditional style Single Cylinder deadbolts utilize the same key for two different doors. They feature hardened steel anti-saw pins, case hardened steel drive rods and hardened steel screws to enhance your security. The interior side has a turn piece to operate the bolt while the exterior side requires a key. Utilizing a KW1 keyway ensures that you"ll always be able to get a key made. These deadbolts fit exterior doors between 1-3/8-Inch and 1-3/4-Inch and their backsets are adjustable between 2-3/8-Inch and 3-3/4-Inch. The US3 polished brass finish is protected by a clear powder coat. Legend locksets feature a limited lifetime warranty.