Color-anodized aluminum cut metal house numbers & letters provide a selection of 4 tones in satin or polished: 1. Gold; 2. Medium Bronze; 3. Dark Bronzes; and 4. Black. Brushed anodized items have a matte finish with no clear coating; and, polished anodized pieces have a glossy (not mirror-like) finish without a clear coat. The surface of these pieces is hardened by the electric-chemical anodizing process. These pieces are good candidates for addresses near salt-water. NOTE: Our polished finish is only available for numbers or letters 2" high or greater.