Door Knobs: Quality crafted door knobs and components made entirely of solid brass with steel working mechanism and our exclusive Renovator's Supply Finish which protects 20- to 0 times longer than the competition. This round chrome passage set includes two chrome knobs, brass and steel latch and circular chrome backplate with .25in square spindle. It also has 2.375in backset. The knobs have a 2.25in diameter. Does not include privacy button.