Our Lamp Holder is specifically designed to accommodate E27 screw bulbs, a type of screw with a diameter of 27 mm. This type is commonly used in most lighting bulbs, including incandescent, LED, and fluorescent bulbs. Product Specifications: Brand: Generic Product Type: E27 Lamp Holder Color: Black Shop more high-quality products from the Bulbs section of El-Buroj Website. Product Features: The holder can be installed on ceilings or walls. The holders are made from high-quality materials ensuring durability and strength to withstand frequent use. The holders feature high insulation quality to protect against electric shocks. Usage: The holders are used in general home lighting, such as room, living room, and hallway lighting. E27 holders can be used in custom lighting designs.