New York Solid Polished Brass Round Knob Door Handles on Backplate. These New York Door Knobs on a Backplate are of very high quality solid brass construction with a soft finish and smooth operation. Size of backplate 4cm x 14.5cm. Sprung Handles and can be used with any mortice latches or tubular latches. Supplied with matching screws and a spindle. The door lock is not supplied, just the thumbturn to operate the lock. Manufacturer: Jones & Grey