Product Description: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 switchInterface specifications: E27Shell material: Aluminum die-castingInternal material: Ceramic + copperColor: Gray / BlackVoltage: 220VHeat resistance temperature: 500Power cord switch length: About 140cmPower Material: CopperUse: farming, industrial lighting and heating.Product use: Use of E27 screw light sources such as heat preservation lamps and LED bulbsPackage Included: ( 5 Type for choose )Type 1: 5 Pcs x E27 Spiral Light SocketType 2: 5 Pcs x Power cord switch(Gray)Type 3: 5 Pcs x E27 Spiral Light Socket + 5 Pcs x Power cord switch(Gray)Type 4: 5 Pcs x Power cord switch(White)Type 5: 5 Pcs x E27 Spiral Light Socket + 5 Pcs x Power cord switch(White)Note:Please allow 1-2mm errors due to manual measurement.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.