Ceramic R7S Lampholder: The main material of the 118mm R7S lampholder is ceramic, which is resistant to high temperature and oxidation and has high stability, which helps to protect and maintain the bulb life. Easy to Use: Linear socket for 118mm R7S LED bulb and R7S halogen lamp. The lamp holder has springs on both ends, easy to assemble. Suitable for floor lamp and indoor wall lamp. Technical Parameter: R7S 118mm lampholder, sun lamp holder, metal halide lamp holder. AC 100-240V, heat resistant temperature is 250. The cable length is 12.5cm. NOTE: R7S halogen bulb size is smaller than R7S LED. If you need to replace the original bulb socket or replace the halogen bulb with R7S LEDs, make sure the original lamp has enough space to house the new R7S socket or R7S LEDs. Application: R7S 118mm socket with holder. Suitable for 118mm R7S linear LED, R7S linear halogen lamp, metal halide lamp, sun lamp. Used in living room, bedroom, shop window, hallway, outdoor garden, house exterior wall, studio, etc.