Step up to designer styles and superior security with Weiser's Welcome Home series of products. Beautifully simple, the Aspen's clean, curved lines combine elegance with versatility. The Iron Black finish is the ultimate warm, dark finish and gives your hardware a wrought iron look and feel. This knob an be locked or unlocked by key on the outside or turn button on the inside & features SmartKey Technology. SmartKey Technology allows you re-key the lock yourself in seconds in 3 easy steps - as often as you wish. At Weiser, we believe people should not have to settle when it comes to home security. And the best security is smart security. Get Smart. Get Weiser.