The door knob can change the appearance of the entire room. Whether it's for decorating a new door or refreshing an existing one, the range of door knobs includes many options. Package: Includes the knob along with the rosettes, connecting pin, and screws for attaching the knob to the door. Material: The metal is high-quality zamac. Return spring: All components of the return spring are metallic and silent. Maintenance: Do not use detergents, caustic, or chlorinated liquids for cleaning. A dry cloth or plain water is enough to keep the product in excellent condition.