Specifications: A total of 4 E27 sockets, each with a size of 54*56mm. The E27 lamp adapter fits all lamps with an E27 thread. The voltage is 250V. Material: The material of vintage e27 lamp holder is made of high quality plastic and aluminum. Has good resistance to heat, corrosion, insulation and electrical conductivity. Features: The classic look of the lamp base complements 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 everything. APPLICATIONS: The retro socket fits all E27 models of threaded, LED, incandescent, halogen and energy saving bulbs. Suitable for ceiling lighting and decoration, bedroom, store, office, garden, etc. Color composition: black Outer material: bakelite (resistant to high temperatures and flame retardant) Field of application: universal sockets such as table lamps, floor lamps, chandeliers, etc. Delivery quantity: 4 pieces lucky meet