The Weiser(R) privacy lever offers a simple and elegant solution. This knob fits traditional, transitional and contemporary styles. The best use of this product is rooms where privacy is required such as bedrooms and bathrooms. The lever is locked or unlocked by turn piece inside. The outside knob can be unlocked by an emergency key. Both right and left-handed doors are compatible with this product. The black iron finish is warm and elegant. Installation is fast and easy. This product features Microban(R) antimicrobial technology, preventing microorganism growth on surfaces. Backed by a lifetime limited warranty on finish and mechanical.