Features1Prevent Corrosion: Lamp holder shell by high temperature electrostatic spraying, high temperature and corrosion resistance, anti oxidation. 2Professional Design: Built in waterproof rubber circle, using high temperature resistant ceramic wick, threaded copper lamp holder, especially suitable for heating lamps. 3Adjustable Temperature: This porcelain lamp holder can control the brightness of the insulation bulb, to two levels of temperature adjustment. 4E27 Interface: Heat lamp holder for E27 interface, easy to install, size standard, to ensure a stable connection does not fall off, the use of more secure and stable. 5Safe And Durable: Small tee ceramic lamp socket with heat insulation and heat dissipation, anti melting, greatly extending the service life.SpecificationItem Type: Heat Lamp HolderMaterial: Nylon, Copper, CeramicFeatures: Small Tee, Two Level Temperature AdjustmentInterface: E27Function: Waterproof, Heat Insulation, Two Level Temperature AdjustmentDescription: Can adjust the temperature of the bulb lower, (such as high temperature bulbs in winter to lower the temperature)Gross Weight: Approx. 130g/4.6ozPackage List1 x Heat Lamp Holder