General description The 3pcs E12 to E27 Bulb Base Converters are designed to easily adapt your lighting needs. Made from high-quality iron-nickel plated metal and PBT materials, these converters ensure durability and reliability. The package includes three converters, making it a practical choice for various lighting applications. Technical specifications Type: E12 to E27 standard screw socket extender Diameter: 4.5 cm Height: 6 cm Usage The bulb base converters are very convenient to use and install. Simply screw the converter into the E27/E26 socket, then screw in your bulb. They are compatible with LED, halogen, filament, or CFL bulbs, making them versatile for different lighting needs.