Metal door knobs are available in a variety of materials, including brass, stainless steel, and bronze, each offering unique characteristics that cater to different design preferences. Brass, for example, is renowned for its warm tone and traditional look, often associated with classic architecture. Its natural resistance to corrosion and tarnish ensures longevity, making it an ideal choice for outdoor gates and entryways. Stainless steel, on the other hand, is celebrated for its modern, sleek appearance. This material not only provides a minimalist aesthetic but is also extremely durable, able to withstand harsh weather conditions without losing its shine or structural integrity.