These wire cage bulb protectors are a unique and creative way to cover exposed bulbs. Slip them over the socket before screwing the bulb in and tighten the screws. Open or close the cage, either way the effect is very industrial and hip. Add to an exposed single bulb pendant or sconce. Use with our vintage Edison bulbs for a true vintage effect. This is the decorative wire cage only. Bulbs and sockets sold separately. The neck opening in is 1.5".