Decor Handles range of Central Door Knobs are Stylish and Sophisticated. One of our best sellers is the Antique brass door knob for pulling and pushing. These knobs are sold per each and are non-turning ideal for front doors or internal doors with a roller catch. The antique brass door knob is 77mm in diameter, knob and base and comes with a threaded rod and bolt for securing. Sold per each however 2 can be installed back to back if needed.