Brass is the most common materials in a socket shell. There are different finishes in the brass shell like; polished (shiny), antique, and unfinished. Keyless Medium-Size Lamp Socket - On/Off - Full Keyless Style, Polished & Lacquered Brass Shell, E-26, 1/8 IPS Cap, 660W-250V, w/set screw, No UNO Thread.
The brass lamp holder is joined by a solid brass threaded collar and another threaded ring is provided for securing a lampshade. The light bulb holder includes a screw terminal for an earth wire. The Safer Switch offers the consumer an extra level of safety previously unavailable in this type of Brass lamp holder.