Feature:1. 3 Pcs Set: The set contains 3 pcs E27 lamp holder for you, easy to install, with good heat insulation, simple and safe to use.2. Premium Shell: The shell adopts aluminum die casting material, treated by high temperature electrostatic spraying, resistant to high temperature, corrosion and oxidation.3. Standard E27 Interface: Professionally manufactured, the lamp socket interface is standard E27, universal to use.4. Waterproof and Anti Melting: Built in waterproof ring, the heating lamp holder is waterproof and anti melting, safe and reliable to use.5. Adjustment Function: The lamp holder can control the brightness and adjust the temperature of the insulation bulb, maintain good performance of the bulb.Specification:Item Type: E27 Lamp HolderMaterial: Aluminum, Copper, Ceramic, WireSize: Approx. 5.2x5.2x8cm/2x2x3.1inWeight: Approx. 250g/8.8ozInterface: E27 (delivered without light source)Features: Waterproof, heat insulation.Package List:3 xE27 Lamp Holder (Without Light Source)