Features: High quality material The socket is adopted quality iron and ceramic material, strong and durable to use. Adjustable degree Smooth surface, 180 degrees rotatable, you can adjust the bulb direction easily. Easy to install Easy to install and use, good for home or office lighting. Standard screw type Ideal for E27 screw type light bulbs. Scope of application The lamp holder can be applied to all kinds of chandeliers, porch lamp, desk lamp, aisle lights, assembly hall, supporting assembly and various kinds of DIY lighting bulb / Edison gallery. Specification: Type: long square box ceiling lamp holder Quantity: 1pc Material: iron+ electric component Color: black/white Model: E27 Voltage: 220v Current: 25a Rotation angle: 180 degrees Base size: 230*80*20mm/9.04*3.14*0.79(L*W*H) Net weight:300g/10.58oz Package: 1* long square box ceiling lamp holder 1* package box