Crystal Octagon Knob Eastlake Backplate (Polished Brass) - the crystal knob measures 1 3/8 inches in diameter and have a projection of 1 1/16 inches (32 mm). The knob and backplate are separate pieces - the knob screws into the drawer from behind once the back plate is mounted. This product comes as an un-lacquered natural brass and it will patina over time. A high strength lacquer coating is available upon request. The back plate measures 4 1/8 inches long by 1 7/8 inches tall with a center-to-center mounting distance of 2 7/8 inches. Highly detailed brass and crystal component. Mounts horizontally or vertically.