Door knobs are made of many materials but brass is most common, as it is resistant to rust. Brass is a yellowish alloy of about 67% copper and 33% zinc, but sometimes small amounts of other metals are also included. This is usually received as a rod of suitable diameter and is cut with the help of machine to the admirable length. Diydoorfurniture.com offers perfect range of premium brass door knobs. Our black antique knobs give exotic look to the interiors. We also provide architectural door knobs