Specifications: A total of 4 E27 sockets, each with a size of 52 * 56 mm. The E27 lamp adapter fits all lamps with an E27 thread. The voltage is 250V. Material: The material of the e27 vintage lamp holder is made of high quality plastic and aluminum. Has good heat resistance, corrosion resistance, insulation and electrical conductivity. Features: The classic look of the lamp base complements the bulbs in different shapes and colors to match to different decoration styles. EASY INSTALLATION: You just need to correctly connect the wires to the positive and negative terminals of the E27 lamp holder, then assemble and tighten it. < p>APPLICATIONS: Retro Edison socket fits all E27 threaded, LED, incandescent, halogen and energy saving bulb models. Suitable for lighting and decoration of ceiling, bedroom, store, office, garden, etc.