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 of different shapes and colors to match different styles of decoration. 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 Product Description Specification: Product Name: e27 bulb holder Material: plastic + aluminum Quantity: 4 pieces Color: Black Rated voltage: 250 V Rated current: 4A Size: Diameter: 40mm Height: 54 mm Center hole diameter: 9 mm Outer height of teeth: 22.2 mm Outside diameter of the ring: 56mm Package Included: 4*E27 Ceiling Light Socket Function: 1. You can easily install it in a short time, very convenient. 2. The design is precise, can be connected and powered well, and can be used for a long time. 3. Suitable for lamps and/or pendant lights. Note: 1. Please allow 1-3mm size difference due to manual measurement. 2. Because the lamp base and the lamp housing are designed with a buckle, please do not tighten them before installation, otherwise the bracket will