Features:Reptile Lamp Holder - Works great with E27 base light bulb, heater, UV lamp, infrared emitter, etc. Adjustable Brightness & Temperature - Featuring a rotary switch on cable to adjust the brightness and temperature of lamp. Free Angle Adjustment - The beam angle can be flexibly adjusted to any desired angle as needs. Durable Ceramic Socket - Lamp holder socket is made from quality ceramic material, heat-resistant and long lasting to use. Easy To Mount - Very simple to install with sturdy clamp, just clip it on desk or other edge around the pet house. Specification:Working Voltage: 110-240VSocket Type: E27 Screw BasePlug Type: US PlugMaterial: Ceramic + Metal + ABSLamp Holder Size: 5.5*5.5*11cmCable Length: About 110cmColor: White | BlackNote:Please allow 1-3cm (0.4-1.18") difference due to manual measurement and slight color variation for different display setting. Thank you for your understanding, nice day! Package Includes:1 x Reptile Lamp Holder(NOTE: Bulb is NOT included.)