Ideal for LED, halogen, filament or CFL bulbs. This lamp converter adapter allows you to choose more LED lights to fit your fixture or base, rather than replacing the lights with a new one. High temperature, no deformation, easy wiring, durable environmental protection. Durable practical, easy to install. Simply screw the socket adapter into your E27 type socket, then screw in two E27 bulbs. High temperature resistant, PBT anti-scalding anti-aging.