3 3/8 Inch Solid Brass Rococo Victorian Knob with Back Plate - back plate measures 3 3/8 inches in diameter and the knob measures 1 7/8 inches in diameter. Comes complete with mounting hardware. This product comes as an un-lacquered natural brass and it will patina over time. A high strength lacquer coating is available upon request. Available in Polished Brass, Antique Brass, Weathered Black, Weathered Rust, Oil Rubbed Bronze, Satin Brass, Antique Nickel, Brushed Nickel, Antique Copper and Polished Nickel.