Round Crystal Spare Door Knob Set (Several Finishes Available)Crystal Door Knobs Round Style 2 1 5 inch Diameter Includes Two Spare Knobs and Passage Spindle Glass doorknobs originated in the early 19th century and gained widespread popularity in the late 1800s and early 1900s, particularly in the United States and Europe. They were prized for their ornate designs and ability to refract light, adding elegance to interior spaces. Each knob measures approximately 2 1 5 inch (diameter). All measurements are