: The shell is made of aluminum die-casting material, after high temperature electrostatic spray treatment, high temperature resistance, corrosion resistance and oxidation resistance. Built-in waterproof rubber ring, high temperature resistant ceramic wick, full screw copper lamp socket, especially suitable for breeding heating and heat preservation lamps, which can increase the service life of the bulb. Name: E27 Heating lamp socket & power cord switch Interface specifications: E27 Shell material: Aluminum die-casting Internal material: Ceramic + copper Color: Gray / Black / White Voltage: 220V Heat resistance temperature: 500 Power cord switch length: About 140cm Power Material: Copper Use: farming, industrial lighting and heating. Product use: Use of E27 screw light sources such as heat preservation lamps and LED bulbs Package Included: ( 5 Type for choose ) Type 1: 1 Pc x Power cord switch Type 2: 1 Pc x E27 Spiral Light Socket + 1 Pc x Power cord switch Type 3: 1 Pc x Power cord switch Type 4: 1 Pc x E27 Spiral Light Socket + 1 Pc x Power cord switch Type 5: 1 Pc x E27 Spiral Light Socket Please note: 1.The size is measured by hands, there may be some deviation, but it does not affect the use.Please read the product size on the details page carefully before purchasing. Thank you. 2.Due to the different ambient light and different display device settings,there may be some deviations between the pictures you see and the items themselves. Please understand. 3. Support dropship, there will be no information in the package. 4. Support , contact us, we will you the best price.