Wall plug-in screw lamp holder with switch $ 4.26 Item type: E27 bulb socket adapter converter maximum. Voltage: 250V maximum. Current: 6A Material: Bakelite adhesive Features: switch control switch feature: The product is made of phenolic adhesive, easy to use and safe. The product adopts aluminum-plated copper lamp ring and pure copper accessories to ensure good contact with the bulb. Exquisite production and strict inspection to ensure long-term stability of the product.