Bright Brass Doorknob Backplate Rosettes, Colonial Style, 2 Inch Dia, Set Of 2 Door Knob Roses for Door Knobs and Door Levers. Obtain your Door Knob Roses here now. Pair of Doorknob Rosettes, Bright Brass 2in Outer Dia, 0.625in Inner Dia Protected by our exclusive RS Finish Guaranteed not to tarnish for years to come