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. With an advanced electroplating painting technique, the brushed finish makes the product more textured and adds a modern look to your home. [Privacy Keyless Door Knobs] Privacy door knobs are ideal for interior room where privacy is needed, such as bedroom and bathroom. From interior, push pin button to lock, twist door knob to unlock. And you can use a hex key and any thin tool to insert the release hole to open the door from outside in emergency. [Universal D1oor Knobs] Gold door knob fits with 1 3/8"(35mm) to 1 3/4"(45mm) doors, adjustable latch from 2-3/8"(60mm) to 2-3/4"(70mm). Morden door knob is single-cylinder reversible design, suitable for left or right-handed doors. You can easily install the modern rectangular door knobs interior set according to the instructions included in the package. Gold interior door knobs fit pre-existing holes greatly, work with both replacement and door.