This item is reliable and excellent light lamp holder adapters, which are made of material. To convert from E40 to E27 base. Easy to install and convenient for your to use, nice and wonderful LED light socket adapter for choice. Features - Color: Mainly black, silver. - Material: Aluminum alloy, PVC. - Size: 5.00X4.20X4.20 cm/1.97X1.65X1.65inch. - Note: suitable for E40 to E27 light head. - Select materials, the product is sturdy and durable, excellent and useful, safe and practical. - Easy to install and convenient for use, to convert from E40 to E27 LED light screw base. - Nice and wonderful LED light socket adapter for your choice, perfect for meet your requirements. - The unique design, excellent and , wonderful useful function, not easy to break. - Suitable and excellent for garages, workshops, basements, carports, shops, monitoring systems. Package list: 8 x lamp head converters