This is a lowpowered 25W heat bulb holder with 2 heatbulbs allowing you to set up the heat bulb in a breeding set up providing a gentle heat to your colonys. Can be used with 50W heat bulbs also. It has no bulky clip so you can just glue gun or tape the wire into your set up with no risk of the bulb burning anything as its low powerd but still provides good heat.