Round Solid Brass Spare Door Knob Set (Several Finishes Available)Solid Brass Door Knobs Round Style 2 1 5 inch Diameter Includes Two Spare Knobs and Passage Spindle With the rise of the Industrial Revolution in the 18th and 19th centuries, advancements in manufacturing techniques led to the mass production of brass hardware, making it more accessible to the general population. Throughout the 20th century, brass doorknobs remained a popular choice for both residential and commercial buildings, prized for their