Description: Vintage, antique and industrial E27 lamp holder, compatible with E27 medium base bulbs, especially vintage Edison bulbs, suitable for decorative pendant lighting projects. (Package: Rose Gold × 4) 2. Features: [High Quality]: UL listed, CE and RoHS certified; [Sturdy]: Bulbs can be held firmly; [Heat Resistant]: High up to 600°C; The maximum power is 600 W; [Material]: Aluminum cover and ceramic lamp holder. 3. Application: 1) Most often used with Edison vintage e27 bulbs and for retro lighting. Create an antique and classic atmosphere to modern life. 2) Additional lampshade. Added different shades and adjusted wire length could bring various decorative effects. 4. Installation: Easy to install. Correctly connect the wires to the positive/negative pole, then assemble all the parts. An installation instruction is attached for your reference.