Electrical UV Black Light Bulb 25 watt Bulb. Comes with E-27 screw fitting making it easy to screw in on any bulb socket, with a diameter of 27mm.
Simple to use. Just screw onto a E-27 sized light bulb socket and switch on. Bright enough to fill a small room with UV light.
This product works only works in countries where the power supply is 240 volts.