Universal Compatibility: Converts B22 (Bayonet) male to E27 (Screw-type) female, allowing you to use E27 bulbs in B22 fixtures effortlessly. Premium Safety and Durability: Engineered for high safety standards with flame-retardant PC shell, heat-resistant, anti-aging, and excellent insulation for long-term reliability. Robust Construction: Features a nickel-plated iron socket for high hardness and corrosion resistance, ensuring stable electrical contact. Quick and Easy Installation: Simply screw the B22 adapter into your existing socket, then insert an E27 bulb no tools required. Versatile Home Lighting Solution: Ideal for lamps, ceiling lights, and fixtures, making it a practical upgrade for household and commercial lighting.