Step up to designer styles and superior security with Kwikset Signature Series products. The detailed styling of the Arlington is a welcome enhancement to your entry doors. The elegant scroll of the Lido complements a variety of homes and makes a stylish design statement. This single cylinder handleset can be locked or unlocked by a key on the outside, or the turn button on the inside. The crisp, clean appearance of the Satin Nickel finish adds to the overall look of the product and brings a modern feel.SmartKey® Re-key Technology allows you to control who has access to your home. Re-key the lock yourself in seconds in 3 easy steps. Have you recently moved or had a child lose a key? It’s time to re-key. SmartKey provides the highest level of residential security and features BumpGuard™ to protect against lock bumping.