A clean, streamlined design on the Delta fits a wide range of decorating styles, from traditional and ranch to contemporary. This lever can be locked or unlocked by key on the outside, or turn button on the inside. 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. The Satin Chrome finish gives the product a modern and minimalist look. Step up to designer styles and superior security with Kwikset Signature Series products. Beautifully simple, the Commonwealth's clean, curved lines combine elegance with versatility. This privacy knob is best used in interior bed and bath applications where privacy is required. Both knobs/levers are locked or unlocked by turn button inside. The outside knob/lever can be unlocked by an emergency key.