TRANSFORMER: This lamp base allows you to easily convert bulbs with E27 sockets to E14 sockets. Simple assembly and wide compatibility make it suitable for use with various lighting fixtures.EASY OPERATION: Simply screw the adapter into your E27 socket fixture, then install an E14 bulb.SET OF 4: Includes four adapters. Ideal for converting multiple bulbs to E14 sockets for enhanced lighting in your home.COMPATIBILITY: Works with all E14 bulbs, including LED, halogen, and energy-saving lamps.External connection: E27 Internal connection: E14 Material: Plastic, copper, aluminum Package includes: 4 x E27 to E14 socket adaptersNote: All measurements are manually taken. Please allow a slight variation of up to 3 cm. Due to differences in lighting and display, colors may vary slightly. Actual product received may differ slightly in color.