small black waterproof bulkhead with gold cageMade from a durable black thermo plastic these are a great lamp designed for walls or ceilings, they are made for outdoor use and are indeed waterproof so have a good all round application. The glass is ribbed internally leaving a smooth outer that's covered by a nickel plated brass cage. Suitable for use with golfball and standard sized bulbs. 180mm Tall x 145mm Wide E27 Screw Bulb Fitting Max 100watt Voltage 220V Installation Wall Ceiling IP55