Black Porcelain Spare Knob Set (Several Finishes Available)Porcelain Door Knob Black Round Style 2 1 3 Inch in Diameter Includes Two Spare Knobs and Passage Spindle Originating in the 18th century, these timeless fixtures became a staple of elegant homes and public buildings, embodying an era of meticulous craftsmanship and refined taste. Their popularity was also fueled by the Victorian era's emphasis on decorative arts and interior design. Each knob measures approximately 2 1 3 inch diameter. The spare door