This round door knob set is constructed from solid brass material and measures 2 1/4 inches overall. Includes a 2 11/16 inch projection and comes with a modern style rosette. Available in a matte black finish. This knob set with fit any door thickness between a standard 1 3/8 inch to a 2 1/4 inch thick. The Passage and Privacy sets come complete with the functioning hardware and a 2 3/8 inch backset is standard. A 2 3/4 inch backset is also available upon request. This particular product has a lead time of approximately 3 to 5 business days.