High quality The E27 lamp holder has passed CE certification and is made of bakelite. It has the characteristics of fire resistance, heat resistance (up to 180C) and corrosion resistance. Classic Design The old-fashioned solid bakelite black socket , with an antique and industrial appearance, can be perfectly matched with bulbs of different shapes and colors. Add a lampshade with a diameter of 40mm and adjust the length of the wire to produce different decorative effects. Parameter Diameter 3.9cm, height 5.1cm, center hole diameter 1 cm, outer tooth height 3.5 cm, outer ring diameter 5.6 cm. Nominal voltage : 250 V, Rated current: 4 A, Heat resistance temperature: 180 .Great for lighting fixtures in various occasions, retro pendant light, canning jar light, lamp fixture and more. Application The bulb holder is suitable for all E27 lamps : LED incandescent lamps, halogen lamps and energy-saving lamps (up to 60 W). It can be used for DIY chandelier, living room, kitchen, dining room and office decoration, etc. Note Since the lamp cap and the Lamp shell have buckles, please do not tighten before installation, because the lamp cap is not easy to open after tightening. Color: Black Quantity delivered: 4 pieces