10x E40 to E27 socket adapter This accessory allows you to convert E40 socket fixtures to accept E27 bulbs without modifying your existing installation. Easy to use: Screw the adapter into your E40 light fixture, then install an E27 bulb as normal. Pack of 10: Includes ten adapters to convert multiple fixtures, ideal for upgrading lighting throughout your home. Fire retardant: Made from flame-retardant PBT (polybutylene terephthalate) material for durability, heat resistance, and electrical insulation. Compatible with a wide range of E27 bulbs, including LED, halogen, energy-saving, and smart bulbs. Reduce waste: Easily adapt fixtures to use bulbs you already have, avoiding the need to replace entire lighting units.