This is excellent lamp head adapter, which are manufactured with durable material, it can be used for long term use. It can be used in home, hotel, restaurant and more. The E40 to E27 lamp bulb converter is easy to use. It can meet your demands. Easy to replace. 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. - Made of material, durable and practical, fine workmanship, good texture. - Compatible for lamp bulb converting E40 to E27, convenient to operate, simple to use. - Simple and convenient to use. The adapter is easy to replace, can easily meet your needs. - Suitable for screw (E40 to E27) lamp, suitable for LED lamp and lamp holder, table lamp, table light, ceiling lamp. - Compact and lightweight, easy and convenient to carry and store when not in use without any effort. Package list: 8 x lamp head converters