The E27 thermoplastic lamp holder kit with double ring and switch is used to assemble a wall, table, or ceiling lamp equipped with a lampshade. Compared to bakelite, thermoplastic has a matte finish and is very lightweight. The presence of the switch allows you to turn the bulb on or off and is useful in cases where a wall or in-line switch is missing. The E27 thermoplastic lamp holder kit with double ring for lampshade and switch is for you if: - you intend to use a shielding element - you want a simple lamp holder at a smart price - you do not have a wall or in-line switch. To configure and complete the E27 thermoplastic threaded lamp holder kit for lampshade and switch: - use the menus to define its features - complete your lighting installation with components, accessories, bulbs, and textile cables by Creative-Cables. Warning! Cable clamp NOT included.