Satin Brass Door Knobs, Modern Rectangular Design, Privacy Function for Bedrooms Brushed Gold Door Handle: Brushed brass door knob is made of heavy-duty zinc alloy, which is sturdy and solid for long-lasting use. With an advanced electroplating painting technique, the brushed finish adds texture and a modern look to your home. Privacy Keyless Door Knobs: Privacy door knobs are ideal for interior rooms where privacy is needed, such as bedrooms and bathrooms. From the inside, push the pin button to lock and twist the door knob to unlock. A hex key or any thin tool can be inserted into the release hole to open the door from the outside in an emergency. Universal Door Knobs: Gold door knob fits doors from 1 3/8" (35mm) to 1 3/4" (45mm), with an adjustable latch from 2-3/8" (60mm) to 2-3/4" (70mm). Modern door knob features a single-cylinder reversible design, suitable for left or right-handed doors. Easy installation: Install the modern rectangular interior door knob set using the instructions included. Gold interior door knobs fit pre-existing holes and work well for both replacement and new door applications.